Anatomy Final

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The region of the sarcomere containing the thick filaments is the

A band.

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

Contraction.

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

All of the above.

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

Striated Muscle

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

All of the above.

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

Neuromuscular junction.

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

H band.

Which of the following best describes the term Z line?

thin filaments are anchored here.

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

Muscle contraction.

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

A motor unit.

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

All of the above.

The plasma membrane of skeletal muscle is called the

Sarcolemma.

The skeletal muscle complex known as the triad consists of

a transverse tubule and two terminal cisternae.

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

tendon.

Which of the following is not characteristic of smooth muscle?

Smooth muscle connective tissue forms tendons and aponeuroses.

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

epismysium.

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

Diaphragm.

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

External Urethral sphincter

The ________ muscle is the strongest jaw muscle.

Masseter.

Which of the following muscles does not elevates the mandible?

Platisma

Which muscle is not involved in mastication?

Mentalis

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

Chewing.

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

Masseter.

Which of the following muscles compresses the abdomen?

B, C, and D

A muscle that flexes the spinal column is the

rectus abdominis.

What muscles raises the eyebrows?

Frontalis.

The "kissing muscle" that purses the lips is the

Orbicularis oris.

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

All of the above.

The ________ covers the anterior surface of the neck.

platysma.

The muscle that adducts and rotates the scapula laterally is the

rhomboid.

The powerful abductor muscle of the upper arm is the

deltoid.

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

tensor fasciae latae.

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

pronator quadratus.

A muscle that adducts the humerus is the

both A and D.

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

protracts the shoulder, abducts and medially rotates the scapula.

Which of the following does not move the shoulder girdle?

deltoid.

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

triceps.

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

extend the forearm.

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

All of the above.

________ neurons form the afferent division of the PNS.

Sensory.

Which part of the neuron can conduct an action potential?

3 and 4.

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

perikaryon.

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

bipolar.

Damage to ependymal cells would most likely affect the

formation of cerebrospinal fluid.

Axons terminate in a series of fine extensions known as

telodendria.

The myelin sheath that covers many CNS axons is formed by

oligodendrocytes.

Branches that may occur along an axon are called

collaterals.

Neurons that have several dendrites and a single axon are called

multipolar.

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

pseudopolar.

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

memory.

Functions of astrocytes include all of the following, except

conducting action potentials.

The axon is connected to the soma at the

axon hillock.

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.

Clusters of RER and free ribosomes in neurons are called

Nissl bodies

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

Anaxonic.

The white matter of the spinal cord contains

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

From which plexus does the highlighted nerve arise?

brachial.

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

horns.

The specialized membranes that surround the spinal cord are termed the

spinal meninges.

Spinal nerves are

both sensory and motor.

In which plexus does the ulnar nerve arise?

brachial.

The spinal cord consists of five regions and ________ segments.

31.

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

filum terminale.

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

phrenic.

The dorsal root ganglia mainly contain

cell bodies of sensory neurons.

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

columns.

Enlargements of the spinal cord occur

in those spinal segments that control the limbs.

The outermost connective-tissue covering of nerves is the

epineurium.

Which of the following is a function of the hypothalamus?

All of the above.

The cranial nerve that has three major branches is the

trigeminal.

The visual cortex is located in the

occipital lobe.

The highlighted structure develops from which brain vesicle?

diencephalon.

Autonomic centers that control blood pressure, heart rate, and digestion are located in the

medulla oblongata.

The tentorium cerebelli separates which two brain regions?

cerebellum and cerebrum.

The cranial nerves that innervate the eye muscles are

III, IV, and VI.

The two cerebral hemispheres are separated by the

longitudinal fissure.

A neural cortex is found on the surface of the

A and C only.

The dural fold that projects into the longitudinal fissure between cerebral hemispheres is called the

falx cerebri.

Which structure is known as the vestibule

6

The senses of equilibrium and hearing are provided by receptors of the

inner ear

Which structure contains the receptors for hearing?

11

The ________ covers most of the exposed surface of the eye.

conjunctiva

All of the following are true of the fibrous tunic of the eye, except that it

produces aqueous humor

Which of the following is true of the vascular tunic of the eye?

All of the above

What structure changes the shape of the lens for far and near vision?

ciliary body

The part of the eye that determines eye color is the

iris

The middle ear communicates with the nasopharynx through the

auditory tube

The vitreous body

helps to stabilize the eye and give physical support to the retina.

The structure that overlies the organ of Corti is the

tectorial membrane.

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