BSC2085 LAB Final Exam Study Guide (Chapters 10-17) Answers only

Identify the structure where ATP is produced.

1) Mitochondria

Which part of the neuron can conduct an action potential?

3, 4, and 5. (axon, telodendria, and synaptic terminals)

The spinal cord consists of five regions and _____ segments

31

The region of the sarcomere containing the thick filaments is the

A band

________ neurons are small and have no anatomical features that distinguish dendrites from axons.

Anaxonic

From which of the following structures does the highlighted muscle originate?

Anterior superior iliac spine

Which of the following muscles is the main muscle of respiration?

Diaphragm

Which of the following muscles compresses the prostate gland in males?

External urethral sphincter

What muscles raises the eyebrowas?

Frontalis

Identify the muscle labeled "12."

Gastrocnemius

The area in the center of the A band that contains no thin filaments is the

H band

Clusters of RER and free ribosomes in neurons are called ________________.

Nissl bodies

Which of the following muscles does not elevate the mandible?

Platysma

________ neurons form the afferent division of the PNS.

Sensory

Which of the following is not characteristic of smooth muscle?

Smooth muscle connective tissue forms tendons and aponeuroses.

The structure labeled "2" is a

Soma

A single motor neuron together with all the muscle fibers it innervates is called

a motor unit

The skeletal muscle complex known as the triad consists of

a transverse tubule and two terminal cisternae.

Which of the following is a member of the hamstring group?

all of the choices are correct -semitendinosus -semimembranosus -biceps femoris

Which of the following muscles is found within the pelvic floor?

all of the choices are correct. -bulbospongiosus -perineal group -ischiocavernosus -coccygeus

Which of the following muscles compresses the abdomen?

all of the choices are correct. -diaphragm -external oblique -rectus abdominis

Compared to a "typical" body cell, skeletal muscle cells are

all of the choices are correct. -filled with crystalline 3-D arrays of fibrous proteins. -multinucleate. -larger than normal cells. -capable of rapid shortening against a load.

The thin filaments of striated muscle are made of which protein(s)?

all of the choices are correct. -troponin -nebulin -actin -tropomyosin

Which of the following is a recognized function of skeletal muscle?

all of the choices are correct. -guard body entrances and exits -produce movement -maintain posture -maintain body temperature

Which neuron structure is highlighted?

axon

The axon is connected to the soma at the ____________.

axon hillock

Which muscle is highlighted?

biceps brachii

Neurons that have one axon and one dendrite, with the soma in between are called ________.

bipolar

Spinal nerves are _______________.

both sensory and motor

From which plexus does the highlighted nerve arise?

brachial

In which plexus does the ulnar nerve arise?

brachial

Which muscle is highlighted?

brachioradialis

Which muscle of the head is highlighted?

buccinator

The white matter of the spinal cord contains _________________.

bundles of axons with common origins, destinations, and functions.

What is released from the structure labeled "9"?

calcium ions

This tissue is ________ muscle.

cardiac

The dorsal root ganglia mainly contain __________.

cell bodies of sensory neurons.

Which spinal cord structure is highlighted?

central canal

A muscle that inserts on the body of the mandible is probably involved in _______.

chewing

Branches that may occur along an axon are called ___________.

collaterals

In the spinal cord, white matter is separated into ascending and descending tracts organized as ___________.

columns

Functions of astrocytes include all of the following, except ______________.

conducting action potentials

Muscle tissue, one of the four basic tissue groups, consists chiefly of cells that are highly specialized for

contraction

The powerful abductor muscle of the upper arm is the ________.

deltoid

What structure is highlighted?

dorsal horns

The dense layer of connective tissue that surrounds an entire skeletal muscle is the

epimysium.

The outermost connective tissue covering the nerves is the __________.

epineurium

Muscles that insert on the olecranon process of the ulna can act to ____________.

extend the forearm

The ________ is a strand of fibrous tissue that provides longitudinal support as a component of the coccygeal ligament.

filum terminale

Damage to ependymal cells would most likely affect the ______________.

formation of cerebrospinal fluid

Which muscle is highlighted?

frontalis

The outward projections from the central gray matter of the spinal cord are called ____________.

horns

Enlargements of the spinal cord occur ________.

in those spinal segments that control the limbs

Which spinal cord structures are highlighted?

lateral horns

A muscle that adducts the humerus is the ____________.

latissimus dorsi

Identify the muscle labeled "6."

latissimus dorsi

The muscle that adducts and rotates the scapula laterally is the

levator scapulae

The ________ muscle is the strongest jaw muscle.

masseter

Which of the following is not primarily a muscle of facial expression?

masseter

Which of the following is not a function of the neuroglia?

memory

Which muscle is not involved in mastication?

mentalis

Which muscle of the head is highlighted?

mentalis

Neurons that have several dendrites and a single axon are called ______________.

multipolar

Interactions between actin and myosin filaments of the sarcomere are responsible for

muscle contraction

The highlighted cranial nerve innervates _____________.

muscles of the posterior arm and forearm (radial nerve).

Each skeletal muscle fiber is controlled by a motor neuron at a single

neuromuscular junction.

The myelin sheath that covers many CNS axons is formed by ____________.

oligodendrocytes

The "kissing muscle" that purses the lips is the

orbicularis oris

Which muscle of the head is highlighted?

orbicularis oris

Which muscle is highlighted?

pectoralis major

The cytoplasm that surrounds the nucleus of a neuron is called the _____________.

perikaryon.

The _________ nerve, which arises in the cervical plexus, innervates the diaphragm.

phrenic

The ______ covers the anterior surface of the neck.

platysma

The muscle that pronates the forearm and opposes biceps brachii is the ______.

pronator quadratus

Which of the following describes the actions of the serratus anterior?

protracts the shoulder, abducts and medially rotates the scapula.

Which of the following is not a recognized structural classification for neurons?

psuedpolar

A muscle that flexes the spinal column is the

rectus abdominis

Which trunk muscle is highlighted?

rectus abdominis

Which muscle is highlighted?

rectus femoris

Which of the following does not move the shoulder girdle?

rhomboid

The plasma membrane of skeletal muscle is called the

sacrolemma

Identify the muscle labeled "25."

sartorius

Glial cells that surround the neurons in ganglia are ____________.

satellite cells

Which of the following are a type of glial cell found in the peripheral nervous system?

satellite cells

Which muscle is highlighted?

scalenes

Which nerve is highlighted?

sciatic

Which muscle structure is highlighted?

smooth muscle fiber

The specialized membranes that surround the spinal cord are termed the ____________.

spinal meninges

The types of muscle tissue include all of the following, except

striated muscle.

Identify the structure labeled "5."

synaptic terminals

Axons terminate in a series of fine extensions known as _______.

telondendria

At each end of the muscle, the collagen fibers of the epimysium, and each perimysium and endomysium, come together to form a

tendon

Muscles that laterally rotate the thigh include all of the following, except the ______.

tensor fasciae latae

Which of the following best describes the term Z line?

thin filaments are anchored here

Identify the muscle labeled "11."

tibialis anterior

Which muscle is highlighted?

trapezius

The muscle that extends the arm while doing push-ups is the _________.

triceps

Which spinal structures are highlighted?

ventral roots

The highlighted structures are formed by ________.

ventral roots and dorsal roots

Which muscle of the head is highlighted?

zygomaticus major