102.b.8 the nervous system

The brain weighs

45-49 ounces

which facial nerves are affected during a massage

A barber is primarily interested in the 5th (trigeminal or trifacial), 7th (facial); and 11th (accessory) nerves of the face, head and neck since they are affected during massages and facials

Deep Peroneal aka: Anterior Tibial

A branch of common peroneal

Superficial Peroneal

A branch of the common peroneal

The 11th cranial nerve that extends into the sternocleidomastoid and trapezius muscle is called the:

Accessory nerve

reflex action.

An immediate response to a specific stimulus without conscious control.

Saphenous

Begins in the thigh

Dendrite

Bring information to the cell body

Which of the following facial nerve branches extend to the muscles of the mouth?

Buccal

motor nerve (efferent)

Carries messages from brain to muscle Cause muscles to contract Cross from one side of the body to the other

sensory nerve (afferent)

Carries messages to the brain and spinal cord • Receptors send sensory messages

Which nerve extends to the muscles on the side of the neck?

Cervical nerve

Infratrochlear

Emerged on the skin of the upper eyelid and side of nose

The system that is composed of a group of specialized ductless glands that regulate and control the growth, reproduction and health of the body is:

Endocrine

Auriculotemporal

Extends to the ear and to the area from the top of the head to the temple

Infraorbital

Extends to the lower eyelid, side of the nose, upper lip and mouth

Mental

Extends to the lower lip and chin

Zygomatic

Extends to the side of the forehead, temple and upper part of the cheek

Supraorbital

Extends to the skin of the upper eyelid, eyebrow, forehead and scalp

Supratrochlear

Extends to the skin of the upper side of the nose and between the eyes

Nasal

Extends to the tip and lower side of the nose

Which mandibular branch nerve extends to the lower lip and chin?

Mental

Why are nerve cells different From other cells

Nerve cells differ in appearance from other cells due to long and short threadlike fibers called axons and dendrites that extend from the cell.

Which of the following cervical nerves do NOT originate in the spinal cord with branches into the scalp and neck?

Posterior auricular

What are the primary components of the nervous system

Primary components of the nervous system include the brain, spinal cord and nerves.

Sensory nerve endings are referred to as:

Receptors

Common Peroneal

Runs alongside the sciatic nerve from the femur to the buttocks, then ventures further down on its own along the knee and behind the fibula; the nerve then splits inside the neck of the fibula into the deep peroneal and superficial peroneal

Sural

Runs down the back of the leg to the outside of the foot and little toe

Which nerve runs down the back of the leg to the outside of the foot and little toe?

Sural

What nerve is affected during a facial massage

The 11th cranial nerve is affected when using massage movements during a facial.

What controls the nervous system

The brain controls the nervous system it is know as command center

What is the central nervous system composed of

The central or cerebrospinal nervous system is composed of the brain, spinal cord and spinal and cranial nerves

What are the primary functions of the respiratory system

The intake of oxygen to be absorbed into the blood The exhalation of oxygen's toxic byproduct, carbon dioxide

What does the nervous system do?

The nervous system coordinates and controls the operation of the human body.

What is the peripheral nervous system composed of

The peripheral (pe-RIF-ur-al) nervous system is composed of sensory and motor nerves that extend from the brain and spinal cord to other parts of the body.

What system is composed of sensory and motor nerves that extend from the brain and spinal cord to other parts of the body?

The peripheral nervous system

How many spinal nerves does the spinal cord hold

The spinal cord holds 31 pairs of spinal nerves that branch out to muscles, internal organs and skin.

What is the spinal cord composed of

The spinal cord, composed of long nerve fibers, originates in the base of the brain and extends to the base of the spine

What is the study of the nervous system called

The study of the nervous system is called neuroscience

Dorsal

The superficial nerve simply sits closer to the skin than the deep nerve and becomes the dorsal nerve

Nerves

Whitish fiber held together byConnective tissue

digestive system

also known as the gastrointestinal system, breaks food down into simpler chemical compounds that can be easily absorbed by cells or, if not absorbed, eliminated from the body in waste products.

Sphenopalatine ganglioneuralgia

brain freeze

Motor or efferent nerves

carry messages from the brain to the muscles and glands.

sensory (afferent) nerves

carry messages to the brain and spinal cord.

What is the nervous system divided into

central nervous system peripheral nervous system and autonomic system

Liver

converts and neutralizes ammonia from the circulatory system to urea (u-RE-ah)

The system that breaks food down to be easily absorbed by cells or to become waste products is the:

digestive system

Motor nerves carry messages from the brain to the muscles and are called:

efferent

The primary function of the excretory system is to:

eliminate solid, liquid and gaseous waste products

Excretory system

eliminates solid, liquid and gaseous waste products from the body

The excretory system

eliminates solid, liquid and gaseous waste products from the body Skin, liver kidneys are a part of this system

How do nephrons allow usable nutrients from urea to be reabsorbed into the blood?

filter waste products and water

Which nerve extends to the lower eyelid, side of the nose, upper lip and mouth?

infraorbital

The endocrine system

is composed of a group of specialized ductless glands that regulate and control the growth, reproduction and health of the body.

The reproductive system

is responsible for the process by which a living organism procreates and transfers the genetic code from one generation to the next.

Trifacial nerve

is the chief sensory nerve primarily responsible for transmitting facial sensations to the brain and for controlling the motor nerve function of chewing

Ophthalmic branch

main nerve branch to the top 1/3 of the face

Diaphragm

muscular organ that separates the chest cavity from the abdomen.

The diaphragm

muscular organ that separates the chest cavity from the abdomen.

What are the three nerves that the trifacial nerve divide into

ophthalmic maxillary mandibular

What system is composed of sensory and motor nerves that extend from the spinal cord and brain to other parts of the body?

peripheral nervous system

Kidneys

receive urea from the liver and then pass the urea through small tubelike structures known as nephrons

The autonomic (aw-to-NOM-ik) nervous system is

responsible for all involuntary body functions

Receptors

send sensory messages like touch, temperature, sight, sound, taste, smell, pain and pressure to the brain for processing.

Which crucial part of the central nervous system is composed of long nerve fibers and originates in the base of the brain and extends to the base of the spine?

spinal cord

The lungs

spongy organs composed of cells into which air enters when you inhale

A division of the ophthalmic branch, extending to the skin of the upper eyelid, eyebrow, forehead and scalp is the:

supraorbital

The ophthalmic nerve branch divides into a nerve that extends to the skin of the upper side of the nose and between the eyes called the:

supratrochlear

Axon

take information away from the cell body in the form of nerve impulses

Mandibular branch

the main nerve branch to the lower 1/3 of the face

maxillary branch

the main nerve branch to the middle 1/3 of the face