nervous system quizzes

the cranial nerves that are purely sensory nerves are

1,2,8 I, II, VIII

impulses for hearing and equilibrium are carried through which cranial nerve?

VIII vestibulocochlear

which plexus innervates muscles of the neck?

cervical plexus

cerebrospinal fluid (CSF)

circulates throughout the brain and spinal cord

the hypothalamus does all of the following, except

control voluntary muscle contraction

the primary function of the cerebellum

coordinate movement and muscle tone

a signal moes through the parts of a single neuron in what order?

dendriats, cell body, axon, axon terminals

a neuron receives signals at its

dendrites

all of the following are sympathetic responses, except

digestion

signals are passed through the nervous system

electricaly and chemically

all of the following are true about gray and white matter in the spinal cord, except

gray matter passes information up and down the spinal cord

which of the following nerves has only motor functions

hypoglossal

what function does gray matter serve in spinal reflexes?

it acts as a processing center for the reflex signal

which of the following statements about cerebrospinal fluid is FALSE?

it only circulates through the ventricles of the brain

which best describes the pathway of circulation for cerebrospinal fluid?

lateral ventricles, third ventricles, fourth ventricles, central canal

which part of the brain is responsible for establishing emotional states?

limbic system

which type of cells phagocytize debris in the central nervous system?

microglia

Brainstem consists of

midbrain, pons, medulla oblongata

a myelinated axon transmits a signal____ a non-myelinated axon

more quickly than

ventral roots carry _____ signals the ______ the spinal cord

motor, out of

the primary sensory cortex is located on which feature of the brain?

postcentral gyrus

the primary motor cortex is located on which feature of the brain?

precentral gyrus

which substance(s) cannot usually cross the blood-brain barrier

proteins

which of the following functions would typically be associated with the right hemisphere of the cerebrum?

recognizing emotions

the function of the thalamus is to

relay sensory information to the cerebral cortex maintain consciousness

the cells that create myelin sheath around peripheral nerve axons are called

schwann cells

the major nerve that passes from the level of the sacrum down the posterior leg is the

sciatic nerve

dorsal roots carry _____ signals _____ the spinal cord

sensory, into

which of the following body functions is controlled by the somatic nervous system?

skeletal muscle movement

cranial nerve X innervates which body part?

stomach

the optic nerve ends in the ____

thalamus

when a neuron is not transmitting a signal which of the following is true?

the net charge inside the cell is negative

why can spinal reflexes occur more quickly than premeditated actions

the signal for a spinal reflex is processed in the spinal cord rather than the cerebrum

which of the following statements about cranial nerves is false?

they innervate only the head and neck

the opthalmic, maxillary, mandibular nerves are all branches of the

trigeminal nerve

hypothalamus function

water balance/bp/temp regulation/hunger/thirst/sex.

IV

4

VI

6

VIII

8

IX

9

which spinal nerve roots from the brachial plexus?

C5-C8

which nerve carries sensory signals from taste buds?

IX glossopharyngeal

functions of cerebrospinal fluid

Mechanical protection, chemical protection, circulate nutrients and waste

touch receptors in the skin carry signals for vibration are known as

Pacinian corpuscles

each dermatome sends sensory signals through

a single pair of spinal nerves

the wave of depolarization that is propagated down an axon is known as the

action potential

which structure is not part of the brainstem?

cerebellum

which of the following is not a somatic sensory pathway?

anterior corticospinal

which of the following statements about neurotransmitters is false?

at neuromuscular junction, acetylcholine has inhibitory affects

the axillary nerve is a major nerve of the ____ plexus

brachial

the eyeball is moved by the

oculomotor nerve abducens nerve trochlear nerve

which cranial nerve connects directly to the cerebrum?

olfactory

the inntermost layer of the meninges of the spinal cord is the

pia mater

in resting state, the plasma membrane of a neuron is

polarized