Chapter 10: CNS

Question 1

Which sequence best represents a reflex arc from the stimulus to the response?

1. effector
2. integrating center
3. motor neuron
4. receptor
5. sensory neuron

a. 3, 1, 4, 5, 2
b. 1, 5, 2, 3, 4
c. 4, 3, 2, 5, 1
d. 5, 2, 3, 4, 1
e. 4, 5, 2, 3, 1

Answer 1

e. 4, 5, 2, 3, 1

Question 2

Which of the following would carry sensory nerve impulses?

a. spinothalamic tract
b. anterior root
c. lateral corticospinal tract
d. anterior gray horns
e. upper motor neurons

Answer 2

a. spinothalamic tract

Question 3

The basal nuclei…

a. release melatonin to regulate individuals’ biological clock
b. help regulate muscle tone needed for specific movements.
c. are sometimes known as the “emotional brain”.
d. are masses of gray matter in the PNS.
e. are the sites where motor impulses cross over to the opposite side of the spinal cord.

Answer 3

b. help regulate muscle tone needed for specific movements.

Question 4

Carpal tunnel syndrome is due to damage to a nerve in the:

a. lumbar plexus
b. cervical plexus
c. brachial plexus
d. cauda equina
e. sacral plexus

Answer 4

c. brachial plexus

Question 5

A needle used in a spinal tap would penetrate (in order):

1. arachnoid matter
2. dura matter
3. epidural space
4. subarachnoid space

a. 1, 2, 3, 4
b. 2, 3, 1, 4
c. 3, 1, 4, 2
d. 3, 2, 1, 4
e. 4, 1, 2, 3

Answer 5

d. 3, 2, 1, 4

Question 6

Axons of the lower motor neurons leave the CNS through the:

a. cerebellum
b. brain stem and spinal cord
c. cerebellum and midbrain
d. corticospinal tracts
e. cerebral hemispheres

Answer 6

b. brain stem and spinal cord

Question 7

Which of the following statements about the blood supply to the brain is NOT true?

a. the brain needs a constant supply of glucose
b. the structure of the brain capillaries allows selective passage of certain materials from the blood into the brain.
c. the glucose brought to the brain can be stored for future use.
d. depriving brain neurons of oxygen for four minutes or more may cause permanent injury.
e. the brain requires about 20% of the body’s oxygen supply.

Answer 7

c. the glucose brought to the brain can be stored for future use.

Question 8

After a car accident, Joe exhibits severe dizziness, difficulty in walking, and slurred speach. He may have damaged his…

a. cerebellum
b. pons
c. reticular activating system
d. fifth cranial nerve
e. midbrain

Answer 8

a. cerebellum

Question 9

Which of the following is NOT a function of cerebrospinal fluid?

a. protection
b. circulation
c. conduction of nerve impulses
d. nutrition
e. waste removal

Answer 9

c. conduction of nerve impulses

Question 10

Which part of the brain contains the centers that control the heart rate and breathing rhythm?

a. medulla
b. midbrain
c. cerebellum
d. thalamus
e. pons

Answer 10

a. medulla

Question 11

The part of the brain that serves as a primary link between the nervous and endocrine systems is the…

a. thalamus
b. hypothalamus
c. pons
d. brain stem
e. cerebellum

Answer 11

b. hypothalamus

Question 12

Which of the following is NOT a function of the hypothalamus?

a. regulate food intake
b. controls body temperature
c. regulates feelings of rage and aggression
d. helps establish sleep patterns
e. coordinates the startle effect

Answer 12

e. coordinates the startle effect

Question 13

The part(s) of the brain concerned with memory, reasoning, judgement, and intelligance is (are) the…

a. sensory areas
b. limbic system
c. motor areas
d. cerebellum
e. association areas

Answer 13

e. association areas

Question 14

A broad band of white matter that connects the two cerebral hemispheres is the…

a. corpus callosum
b. gyrus
c. insula
d. ascending tract
e. upper motor neurons

Answer 14

a. corpus callosum

Question 15

The ringing of your alarm clock in the morning wakes you up by stimulating your…

a. thalamus
b. reticular activating system
c. Broca’s area
d. basal nuclei
e. spinal cord

Answer 15

b. reticular activating system

Question 16

Put in the right word:

………. contains primary visual area that allows interpretation of shape and color

Answer 16

Occipital lobe

Question 17

Put in the right word:

………. receives impulses for smell

Answer 17

temporal lobe

Question 18

Put in the right word:

………. contains primary motor area that controls muscle movement

Answer 18

frontal lobe

Question 19

Put in the right word:

………. receives sensory impulses for touch, pain and temperature

Answer 19

parietal lobe

Question 20

When entering a restaurant, you are bombarded with many different sensory stimuli. The part of the brain that combines all of those sensory inputs so that you can respond appropriately is the…

a. somatosensory association area
b. common integrative area
c. premotor area
d. Wernicke’s area
e. hypothalamus

Answer 20

b. common integrative area

Question 21

Which cranial nerves contain only sensory fibers?

a. olfactory, optic and glossopharyngeal
b. optic and oculomotor
c. optic and trochlear
d. optic and olfactory
e. vagus and facial

Answer 21

d. optic and olfactory

Question 22

Which cranial nerve(s) help(s) control swallowing?

a. glossypharyngeal
b. vagus
c. facial
d. hypoglossal
e. trochlear

Answer 22

a. glossypharyngeal, b. vagus and d. hypoglossal

Question 23

Put in the right word:

………. :organization of white matter in the spinal cord

Answer 23

columns

Question 24

Put in the right word:

………. :absorb cerebrospinal fluid

Answer 24

arachnoid villi

Question 25

Put in the right word:

………. :extension of nerves beyond the end of the spinal cord

Answer 25

cauda equina

Question 26

Put in the right word:

………. : folds of the cerebral cortex

Answer 26

gyri

Question 27

Put in the right word:

………. :contains the sensory axons of a spinal nerve

Answer 27

posterior (dorsal) root

Question 28

Put in the right word:

………. : contains the motor axons of a spinal nerve

Answer 28

anterior (ventral) root

Question 29

Put in the right word:

………. :separates the cerebrum into right and left halves

Answer 29

longitudinal fissure

Question 30

Put in the right word:

………. :divides spinal cord into right and left sides

Answer 30

anterior median fissure

Question 31

Put in the right word:

………. :brain cavities where CSF circulates

Answer 31

ventricles

Question 32

Put in the right word:

………. :shallow grooves in the cerebrum

Answer 32

sulci

Question 33

Put in the right word:

………. :contains CSF in the spinal cord

Answer 33

central canal