Anatomy quarter 1 exam

For the action potential of a nerve impulse to occur the stimuli has to reach a threshold of

-55mV

In the diagram of the year which structure would be known as the Eustachian tube

11

According to the rules of nines if a child burns both legs to the knee and a scalding hot bath then approximately what percentage of the patient's body surface is estimated to be affected

14%

You forget to put on sunscreen before going to the beach you end up getting a sunburn the sunburn is red and painful but appears to only have reached the epidermis which degree burn did you suffer

1st degree

Which type of burn is characterized by the epidermis and dermis being destroyed leaving scar tissue behind

3rd degree

In the diagram of the ear which of the following depicts the Tympanic membrane

4

According to the rule of nine if an adult has burns on the entire right side of the body arms and legs and a small portion of the chest region from a house fire and approximately what percentage of the patient's body surface area is estimated to be affected

40%

In the diagram of the year which of the following to pick the semicircular Canals

6

According to the diagram which number represents the hypodermis

8

A human cell containing 92 chromatids at metaphase of mitosis would produce two nuclei containing how many chromosomes in each new cell once mitosis is completed

92

Frontal section is

A

Which letter represents the abdominal body region known as the right hypochondriac

A

When an area of the skin is mechanically stressed, stem cells of the stratum germinativum divide more rapidly and the depth of the epithelium increases. This thicker area is known as____.

A callus

Myelin can be described as

A fatty material that surrounds the axon of a neuron

Which of the following correctly describes the structural arrangement of the cell membrane

A free-flowing bilayer of phospholipids with Proteins embedded loosely in bilayer

The partial negative charge at one end of a water molecule Is attracted it to the partial positive charge of another water molecule what is this attraction called

A hydrogen bond

An excitatory postsynaptic potential (EPSP) ______

A membrane changes by depolarizing which triggers an action potential

An inhibitory postsynaptic potential (IPSP)_____

A membrane changes by polarizing which triggers a resting potential

Which of the following best describes the class of molecules known as nucleotides

A nitrogen base a five carbon sugar and a phosphate group

Which describes apoptosis

A programmed cell death

It is advantageous for cells to be small because

A small cell has a small volume relative to surface area thereby increasing efficient transport

If you were a physician evaluating a young person who has conductive deafness which of the following would you consider and your differential diagnosis

A torn Tympanic membrane

The center for control of motor skills and posture is the structure labeled_____

AD

What is the body cavity that is labeled J and includes the stomach liver and intestine

Abdominal cavity

Annie is running swiftly toward the soccer goal what neurotransmitter is her body using to tell her skeletal muscles to contract

Acetylcholine

A patient visit a dermatologist the patient is affected by pus filled comedones Along his nose across his four head and throughout his back the patient is 13 years old what is your probable diagnosis

Acne

How does the Mylan sheath increase the speed of action potential activity

Action potentials occur only at the node of ranvier skipping the Mylan sheath

What type of tissue is seen on the slide

Adipose

Which pathway carries sensory information to the central nervous system

Afferent

Saturated fats are distinguished by____where as unsaturated fats are distinguished by____

All carbon atoms being joined with single carbon-carbon bonds; One or more double bonds occurring between carbon atoms

What type of skin graft involves the temporary transplantation of burned tissues with frozen skin from a cadaver

Allograft

The changing arrangement of the cells in this tissue type make it excellent for

Allowing stretching

A patient showing severe signs of dementia and periods of not remembering spouse children or knowing the year may likely be suffering from

Alzheimer's disease

When a protein is formed an amino acid combines together with another amino acid how are two amino acids attached together

Amino group to carboxyl group

Otitis media is ______

An infection of the middle ear

As shown in the diagram the centromere's uncouple and sister chromatids separate and move toward opposite poles of the cell which phase of mitosis is being described

Anaphase

Which choice describe the differences between an animal cell and plant cell

Animal cells have lysosomes and centrioles

What is the body region known as the lower arm and represented by I

Antebrachium

What is the body region represented by F

Antecubital

What are the specialized sweat glands found in the axillary and inguinal areas

Apocrine

What type of granular epithelium tissue would be found in the mammary glands which pinches off a portion of the cell with secretory vesicles

Apocrine

The type of sweat glands that may also function as scent glands are the

Apocrine gland

Which of the following tissues functions as a universal packing tissue and glue to hold organs in place resembles a cobweb

Areolar tissue

A curvature defect of the lens or cornea in which some parts of an image are in focus and the retina and other parts are blurred and vision is distorted is called

Astigmatism

Your neurons are dying because you are not getting enough oxygen and glucose your body slipped into a coma which neuroglia has malfunctioned

Astrocytes

In the diagram of the year what is the proper name for structure 1

Auricle

The division of the nervous system that controls your heart rate and blood pressure is the

Autonomic

What is the name for the structure labeled L on the neuron which relays the nerve impulses toward another neuron

Axon

5. The arrector pili muscle is represented by letter

B

At which point of the action potential graph depicts depolarization

B

Transverse section is

B

What is the abdominal body region that lives in the Center and includes the Naval

B

A dermatologist examines a patient with lesions on the face some of the lesions appear as shiny raised spots other are ulcerated with a beaded edge what is the diagnosis

Basal cell Carcinoma

The epidermal layer that contains one row of actively mitotic stem cells and may occasional include melanocytes is the stratum

Basale

Light is refracted when it passes_____within the eye

Between media of different optical density is at an oblique angle

The taste sensation are as humans evolutionarily adapted to be most sensitive to and why

Bitter taste because they can be poisonous substances

The diagram depicts what type of connective tissue

Blood

Your____is a type of connective tissue that transports your hormones nutrients and other materials all over your body

Blood

Dense elastic connective tissue forms parallel strands in

Blood vessels

Marfan's syndrome is an autosomal dominant genetic mutation for the coding of the protein fibrillin a Key component of connective tissue what aspect Is most likely with a person with Marfan syndrome

Blood vessels like aorta may rupture

When the body temperature rises above normal how do the blood vessels and sweat glands within the skin respond

Blood vessels relax and sweat gland activity increases

What type of tissue is illustrated in the diagram

Bone

What is the body region known as the upper arm and represented by G

Branchium

Which of the following statements is true about buffer solutions

Buffers tend to maintain a relative consistent pH

Mid sagittal section is

C

The sebaceous gland is represented by letter

C

The structure labeled______contain centers concerned with body temperature regulation and with salt and water balance

CD

Name two characteristics of carbohydrates

Carbohydrates contain C H & O with a one carbon two hydrogen one oxygen ratio Carbohydrates provide much of the energy that sells need

Which four elements make up approximately 96% of living matter

Carbon hydrogen Nitrogen & oxygen

What muscle tissue type is illustrated in the diagram

Cardiac

Which organ system transports nutrients metabolic wastes gases and defense cells

Cardiovascular

What is the classification for the part of the nervous system that includes the brain and spinal cord

Central nervous system

The area of the brain that is responsible for memory logic voluntary movement and higher level thinking is the_____

Cerebrum

Glands found in the external ear canal are called_______ glands.

Ceruminous

Olfactory receptors which provide the sense of smell are ________

Chemoreceptors

Who would you expect to be most at risk for developing the bone disease known as rickets?

Children born to mothers with dark skin living far from the equator

Which of the following parts of the ear helps translate sound into electrical signals

Cochlea

Connective tissue fibers that have great tensile strength and can be found and ligaments are

Collagenous fibers

Areolar tissue contains

Collagenous fibers, elastic fibers and gel-like ground substances

A general characteristic of connective tissue is that

Connective tissues stem from a common embryonic tissue called mesenchyme

What is the physiology Function of the retina

Contains the rods and cones photo receptors that send signals to the brain

What is the physiology function of the Iris

Contracts or dilate pupils to regulate the amount of light light into the eye

The strata of thick skin epidermis from superficial to deep are

Corneum lucidum Granulosum spinosum basale

The primary function of the____is to integrate motor sensory and cognitive performances between the cerebral hemispheres

Corpus callosum

What is the body cavity that is labeled B which would contain the brain

Cranial cavity

Which of the following depicts the cornea

D

A general function of the nucleic acid is that

DNA stores genetic information

Which of the following are present in both prokaryotic and eukaryotic cells

DNA, RNA, ribosomes and a cell membrane

_____Is the cytoplasmic extensions that provide the main receptive surface for the peripheral neuron which is labeled E

Dendrites

What type of connective tissue is illustrated in the microscope slide which was taken from the dermis of the skin

Dense irregular fibrous

Tendons and ligaments are composed primarily of_____

Dense regular connective tissue

What is a normal response to excessive loss of body heat in a cold environment?

Dermal blood vessels constrict

The pacinian corpuscles

Detect heavy pressure and vibrations on the skin

The nervous system_____(3)

Detects or senses changes in the internal or external environment Controls the movement of muscles Inner great information from several sources and uses the information to determine an appropriate response

From where do the cells of the epidermis obtain oxygen and nutrients?

Diffusion from blood vessels in the dermis

The wrist is____to the elbow

Distal

Eugene has gotten addicted to the thrill of gambling he keeps trying to replicate that rush by betting higher and higher amounts of money which neurotransmitter was involved in this type of behavior

Dopamine

What is the cavity that contains the cranial and spinal cavities

Dorsal cavity

What is the sequence from outermost to innermost layers of the meninges

Dura matter, arachnoid matter, Pia matter

The sweat gland is represented by letter

E

Which of the following depicts the lens

E

Which point of the action potential graph would a neuron be able to generate another nerve impulse or action potential

E

Small non-polar molecules such as carbon dioxide and oxygen____

Easily pass through the cell membrane

Which pathway is used to carry nervous signals from the brain to the muscles

Efferent

The diagram illustrates cartilage cells in the lacunae which is surrounded by extracellular matrix that contains many collagen fibers what type of cartilage is illustrated in the diagram

Elastic cartilage

Accessory structures of the skin, such as nails, originate from the_________

Epidermis

Which of the following spaces is found around the spinal cord but not around the brain

Epidural space

What is the abdominal body region that lives in the superior central portion and represented by E

Epigastric

In which cell type would you expect to find the most tight junctions

Epithelial cell lining digestive tract

Epithelial tissue is characterized by (2)

Epithelial tissue lacks blood vessels Epithelial tissue functions in secretion and absorption and excretion

Based on the structure and function of this tissue which location on the human body it would be ideal for taking a sample of this tissue

Esophagus

What structure is responsible for maintaining an equalizing pressure within the ear

Eustachian tube

What is the function of Cerebrospinal fluid

Exchanges nutrients and waste between the blood and the nervous tissue and provides a fluid cushion to the brain and nerves

_________ Is when the eyelids close in response to foreign objects touching the cornea

Eye blink reflex

Skin wrinkles with age because

Fat is lost from the subcutaneous layer and the dermis shrinks

What is the body region known as the thigh and represented by letter N

Femoral

The type of cartilage in intervertebral disks Of the vertebral column is

Fibrocartilage

A patient has had an abrupt personality shift and is being very impulsive she keeps slapping strangers she thinks looks shady she might have a tumor in what area of the brain

Frontal lobe of the cerebrum

Taste buds are located on the____of the tongue

Fungiform and circumvallate papillae

Which of the following to depicts the Sclera

G

Cells such as nerve cells that are in a non-dividing state are in which phase

G 0

Biochemical tests show a cell with replicated DNA but incomplete synthesis of proteins needed for cell division in which stage of the cell cycle with this cell most likely to be

G 2

What is the body region it represented by I or the rump area

Gluteal

_______ is an organelle with a cis and trans face which acts as the Packaging and secreting center of the cell

Golgi apparatus

Carbon______

Has the ability to bond covalently together to form long carbon molecules

Three functions of proteins

Help to fight disease Control the rate of reactants and regulate cell processes Build tissues such as bone and muscle

What type of granular epithelium would be found in sebaceous glands which causes the whole Cell burst and release the secretory vesicles

Holocrine

The tendency for physiological systems to stabilize internal conditions called

Homeostasis

The diagram illustrates cartilage cells in lacuane which are Surrounded By extracellular matrix containing fine collagen fibers what type of cartilage is illustrated in the diagram

Hyaline cartilage

The interior of the phospholipid by layer is

Hydrophobic

If the concentration of solutes In a cell is less than the concentration of solute in the surrounding fluid than the extracellular fluid is said to be

Hypertonic

A "shock absorber" and "insulator" function of the integumentary system is performed by the.

Hypodermis

The area of the brain that deals with homeostasis activities such as regulating body temperature of metabolism and contains the limbic system is the_____

Hypothalamus

What is the abdominal body region that lies to the left and right inferior portion is near the hips

Iliac

Where is Hyaline cartilage located

In the Larynx and the ends of long bones

What is the purpose of stratification or layering in epithelial tissue

Increase protection

Based on the structure of this tissue what would be possible functions of this tissue

Insulates the body, protect some organs by providing cushion, serves as a site for energy storage

What organ system would include the following growth structures skin hair and nails

Integumentary

What is the condition that signifies a liver disorder and is pheomelamin caused by membrane a buildup of bile in the blood and body tissue in which a persons skin tirns yellow?

Jaundice

Two characteristics of thin skin

Keratinized epidermal cells and contains sebaceous glands

According to the anatomical diagram the anatomical position of C is____to D

Lateral

Which Eye muscle moves the right Eye laterally away from the midline

Lateral rectus

Which abdominal body region would include the following organs stomach liver intestine and Spleen

Left hypochondriac

Through which area of the eye can the refraction of the light be varied

Lens

Microtubules structure and function

Long slender tubes of gobular protein; Form internal skeleton of cell

Farsightedness after the age of 45 is most likely caused by

Loss of lens elasticity

What body region is the lower back which is represented by G

Lumbar

What organ system protects the body by destroying bacteria and tumor cells this system would include the organs liver spleen and thymus

Lymphatic

Over time people aho migrated to the northern regions of earth devloped a light skin color because lighter skin provided an advantage to.

Make enough vitamin D

According to the anatomical diagram the anatomical position of D is____ to C

Medial

What area of the brain contains the vital centers for heart rate respiration and blood pressure

Medulla oblongata

A patient is concerned about skin cancer you examine a 7 mm mole on her leg the mole is circular and has some patches of red black and brown spread throughout the patient began lying in tanning beds last year and is 19 years old what is your diagnosis

Melanoma

Vesicles structure and function

Membranous sacs; Contains various substances that recently enter the cell

A patient has a severe high fever inability to handle bright light and swelling of the protective lining of the skull lumbar puncture to text bacteria present in the spinal fluid this patient most likely suffers from

Meningitis

endings that are present at the epidermal-dermal junction and are intimately associated with disc-like nerve that detect touch and are known as ______ cells

Merkel cells

The organelle that is a major producer of ATP is found in both heterotrophs and autotrophs is the

Mitochondria

Neurons that conduct impulses from the central nervous system to muscles or glands are

Motor neurons

What does the inferior oblique eye muscle do

Move the eye upward and away from the midline

Which of the four major types of membranes lines tubes and cavities that open to the outside of the body

Mucous membrane

___Is the most common type of neuron that possesses a single axon and many dendrites allowing for the integration of a great deal of information from other neurons

Multi polar

_____ Is an auto immune disease of the nervous system which targets the Mylan sheath and causes loss of signaling across the neuron

Multiple sclerosis

The golgi tendon organ is stimulated more when____

Muscle tension increases

Which organ system is directly involved with heat production

Muscular system

Went by the temperature rises a center in the brain initiates physiological changes to decrease the body temperature this is an example of

Negative feedback

Repolarization the sodium potassium pump is utilized the inside of an axon becomes more_____ as ______ ions flood outside the cell in order to return the Nerve cell back to its resting potential

Negative, potassium

The cell (labeled J) observed in the slide is protected and supported by the tiny cells surrounding it that appear like dots what are these cells

Neuroglial cells

Another name for pain receptors are______

Nocieptors

The structure labeled J on the nerve or the gaps between the Mylan sheath's are called _____

Nodes of Ranvier

Which body region is represented by A

Occipital

Which lobe of the cerebrum is responsible for vision

Occipital

Which cranial nerve controls the contraction of the circular muscles of the Iris

Oculomotor

Which cranial nerve is a motor nerve to the lateral rectus eye muscle to move the eye and associated with proprioceptors

Oculomotor

Which cranial nerve (labeled 8) receives sensory information associated with smell

Olfactory

The receptors for smell are located in the

Olfactory Epithelium

What are the star shaped specialized cells found in Rows along the axons of nerve cells which form myelin sheaths in the brain and spinal cord

Oligodendrocytes

Which cranial nerve (labeled 9) conducts sensory information associated with vision

Optic

What are the special cells that maintain the metabolism and to exchange nutrients and eliminate wastes (labeled a in the diagram)

Osteocytes

The pepsin enzyme

PH affect the structure of pepsin and trypsin and the activity rate of enzymes

Pressure receptors located deep in the dermis are called

Pacinian corpuscles

What is the double layered serious membrane sack that surrounds the heart which is labeled B

Parietal pericardium

What is the membrane that Lines the walls of the left and right thoracic compartments which is labeled G

Parietal pleurae

What is the body cavity that is labeled G which would contain the heart

Pericardial cavity

The rods are responsible for____where is the cones are responsible for____

Peripheral and dim light vision; High acuity color vision

What is the membrane or lining of the abdominal cavity

Peritoneum

Which organelle carries out diverse metabolic processes that break down fatty acids and produces hydrogen peroxide as a byproduct which it converts to water

Peroxisomes

Which of the following happens first after a scab forms?

Phagocytic white blood cells remove dead material

_______Is the study of the functions of the body structures

Physiology

Describe a lysosome

Plays a role in cellular digestion and degrade worn out cell components

What is the body cavity that is labeled H

Pleural cavity

Which body region is the depression in the back of the knee which is represented by K

Popliteal

3 major functions from human hair

Prevent entry of foreign particles into eyes ears and nose Protect scalp from UV radiation Detect or sense foreign debris such as insects on the body

Lacrimal glands____

Produce tears containing lysosome to protect the eye

As shown in the diagram the chromosomes begin to condense from chromatin and the spindle apparatus assembly forms what phase of mitosis is being described

Prophase

The brain barrier______

Protect CNS from foreign substances

An enzyme is defined as a

Protein that speeds up chemical reactions without being charged or depleted

Which portion of the cell membrane contributes to the selectively Permeability

Proteins

What is the function of eyebrows

Provide shade and prevent perspiration from reaching the eye

Which type of epithelial tissue is Depicted in the diagram

Pseudostratified ciliated Columnar

describes the order of a reflex arc

Receptor, sensory neuron, spinal cord, motor neuron, effector (muscle or gland)

The color receptors in the retina are most sensitive to light waves that are

Red green and blue

When an axon is in the middle of an action potential it can't respond to any other stimuli no matter how strong this is called the______ Which helps prevent signals from traveling in both directions down an axon at once

Refractory period

What is the function of the thalamus

Relay sensory input to the correct portion of the cerebrum

Facilitated diffusion

Requires a transmembrane protein

Which organ system removes carbon dioxide from the blood stream

Respiratory

Eccrine sweat glands__________

Respond primarily in elevated body tempture

____Tissue is a woven mass of fibers that provides the soft internal framework or stroma of the spleen lymph nodes and bone marrow to hold blood in place

Reticular

The salivary gland produce a large quantity of enzymes which are transported out of the secretory cells Which of the following organelles would be in abundance in the cells

Ribosomes

What is the structure labeled G which is responsible for making the myelin sheath in this peripheral neuron

Schwann cells

Acne is a disorder of an over active

Sebaceous gland

What is the oily secretion that lubricates the skin and hair is known as

Sebum

A burn patient reports that the burns on her hands and face are not painful but she has blisters on her neck and forearms in the skin on her arms is very red this burn would be classified as

Second degree

What function do fibroblasts serve in connective tissue

Secrete proteins that become fibers in the connective tissue matrix

A cochlear implant treats____

Sensorineural deafness

A patient who has a severe hemorrhage accidentally Receives a large transfusion of distilled water into a major blood vessels you would expect this mistake to have

Serious perhaps fatal consequences because the red blood cells would swell and burst

What type of epithelial tissue is depicted in the microscope slide below

Simple Columnar

Which type of epithelial tissue lines the sweat gland and is depicted in the diagram

Simple cuboidal

What type of epithelial tissue that Is depicted in the diagram which shows a single layer of flattened cells

Simple squamous

The tissue through which gases are exchanged between the blood and lung alveoli are ______

Simple squamous epithelium

What organ system would include the following growth structures ligaments and cartilage

Skeletal

Which organ system provide support and protection of soft tissue mineral storage and blood formation

Skeletal

Which type of muscle tissue are striated

Skeletal and cardiac

Which of the muscle types is best described as having long cynlindrical shaped cells Multinucleated and striations

Skeletal muscle

What is a vital function of the skin

Skin converts modified epidermal cholesterol to vitamin D

Anosmia is the loss of _____

Smell

What type of muscle tissue is illustrated in the microscope slide

Smooth

Which muscle tissue types are involuntary

Smooth and cardiac muscle tissue

Which Type of organelle is primarily involved in the synthesis of oils phospholipids and steroids

Smooth endoplasmic reticulum

What type of epithelial tissue is shown in the microscope slide

Stratified cuboidal epithelium

What type of epithelial tissue is depicted in the diagram

Stratified nonkeratinized squamous

What type of epithelial tissue is found in areas subject to considerable friction and abuse such as the esophagus

Stratified squamous epithelium

According to the diagram which of the following describes layer six

Stratified squamous epithelium and avascular

Which layers of the epidermis contain living cells

Stratum basale stratum spinosum stratum granulosum

According to the diagram What is the epidermal layer labeled 3

Stratum granulosum

The skin is____to the muscles

Superficial

According to the anatomical diagram the anatomical position of A is____to B

Superior

Which human eye muscle move the right eye upward

Superior rectus

Where would you find the epithelium tissue stratified cuboidal epithelium

Sweat glands or mammary glands

The division of the nervous system that is responsible for the Fight or flight response is the

Sympathetic

Tonya's pupils are dilating and her adrenaline is pumping as she walks onto the stage which division of the nervous system has most likely lead to this bodily response

Sympathetic

What is the junction between two nerve cells consisting of a minute gap across the impulse by diffusion of a neurotransmitter

Synapse

Of the four major types of membranes the one consisting of dense connective tissue overlyning loose connective tissue in the shoulder joint is ____

Synovial membrane

The glycoproteins and glycolipids of animal cell membranes are most important for

The ability of cells to recognize like and different cells

What determines the color of skin

The amount of melanin that melanocytes produce

One of the buffers that contribute to pH level in human blood is carbonic acid carbonic acid is a weak acid that disassociates into A bicarbonate ion and a hydrogen ion if the pH of the blood drops one would expect

The bicarbonate ion will act as a base and remove excess hydrogen ion with the formation of H2CO3

Where would you find the epithelial tissue shown in the diagram

The lining of the respiratory tract such as trachea

Elderly people may become less able to maintain stable body temperature because

The number of sweat glands diminishes

The blind spot is caused by

The optic nerve exiting the eye which contains no photoreceptors

What occurs if a Red blood cell is placed in a hypertonic solution

The red blood cell will swell and eventually burst

What is the body cavity that is the anterior space superior to the diaphragm

Thoracic cavity

Microfilaments structure and function

Tiny rods of protein; Aid in cellular movement

Which of the following describes the function of the ossicles within the ear

To amplify the vibrations produced by soundwaves entering the acoustic Meatus

Which of the following describes the function of the semicircular Canal's inside the ear

To maintain balance through position of bone called otoliths That stimulate hair cells

What is the significance of hyper polarization

To prevent electrical impulses from traveling backwards along the axon by increasing distance from the threshold potential

What is the purpose of the coronoid coat which is the middle layer labeled H

To provide nutrients to the retina, to prevent light from scattering, supplying oxygen to the eye

What type of epithelial tissue is depicted in the diagram and shows that sells can change shape

Transitional

The type of epithelium that lines the urinary bladder and many of the urinary passageways is

Transitional epithelium

The large cell at the center of the slide appears to have arms (labeled M) extending off of the cell these arms would be able to

Transmit electrical impulses or signals

The____separate the cerebrum from the cerebellum

Transverse fissure

When these two genes____are abnormal they cause cancer

Tumor suppressor and oncogenes

Elimination of excess water salts and waste products are functions of the______system

Urinary

What is the double layered serious membrane covering the heart which is labeled c

Visceral pericardium

Which of the following is the most abundant inorganic substance in the body

Water

Describe 3 properties of water that helps to sustain life

Water functions as a lubricant to reduce friction between body parts Water is a chemical reactant and plays a role in most of the metabolic reactions in the body Water has a high heat capacity allowing water to provide a stable thermal environment for organisms

Osmosis is defined as the movement of

Water molecules from a high concentration to the low concentration through a selectively permeable membrane

The function of skin include(3)

acting as a protective covering or barrier, excretion of waste, regulating body tempture

Shafts of hair are cells composed of

dead epidermal cells

You want to scratch your nose which of the following is the correct order that an electrical signal flows into an along a nerve

dendrite>cell body>axon>axon terminal>synapse

What are the three parts of a neuron

dendrites, cell body, axon

The hardness of a nail comes from ______

keratin

The dividing cells of a nail are located in the____

nail matrix

Fingerprints are caused by.

the genetically determined arrangement of dermal papillae The conspicuous epidermal ridges The sweat pores