Chapter 14: Structure and function of the neurologic System

Question 1

which is a function of the somatic nervous system?

a. the conduction of impulses to involuntary muscles and glands
b. the conduction of impulses to the central nervous system
c. the conduction of impulses regulating voluntary control of skeletal muscles
d. the conduction of impulses between the brain and spinal cord

Answer 1

c. the conduction of impulses regulating voluntary control of skeletal muscles

Question 2

a neuron with a single dendrite at one end of the cell body and a single axon at the other end of the cell body would be classified as

a. unipolar
b. multipolar
c. monopolar
d. bipolar

Answer 2

d. bipolar

Question 3

neurons that carry impulses away from the CNS are called

a. afferent neurons
b. sensory neurons
c. efferent neurons
d. associaton neurons

Answer 3

c. efferent neurons

Question 4

neurons are specialized for the conduction of impulses, whereas neuroglia

a. support nerve tissue
b. serve as motor end plates
c. synthesize acetylcholine and cholinesterase
d. initiate responses maintaining homeostasis

Answer 4

a. support nerve tissue

Question 5

there is a one way conduction at a synapse because

a. only post synaptic neurons contain synaptic vesicles
b. acetylcholine prevents nerve impulses from traveling in both directions
c. only the presynaptic neuron contains transmitters
d. only dendrites release neurotransmitters

Answer 5

c. only the presynaptic neuron contains transmitters

Question 6

which of the following contains the thalamus and hypothalamus?

a. the diencephalon
b. the cerebrum
c. the medulla oblongata
d. the brainstem

Answer 6

a. the diencephalon

Question 7

the reticular activating system

a. programs for fine repetitive motor movements
b. maintains wakefulness
c. maintains constant internal environments
d. affects the positioning of the head to improve hearing

Answer 7

b. maintains wakefulness

Question 8

which of the following statements best describes the spinal cord?

a. it descends inferior to the lumbar vertebrae
b. it conducts motor impulses from the brain
c. it descends to the fourth lumbar vertebra
d. it conducts sensory impulses from the brain

Answer 8

b. it conducts motor impulses from the brain

Question 9

which of the following is a protective covering of the CNS

a. CSF
b. Dura Mater
c. Precentral gyrus
d. cauda equina

Answer 9

b. Dura Mater

Question 10

the composition of cerebrospinal fluid is

a. the same as blood
b. distilled h20 with dissolved salts
c. a plasmalike liquid with glucose, salts, proteins, and urea
d. a heavy mucous solution with dissolved salts, glucose, and urea

Answer 10

c. a plasmalike liquid with glucose, salts, proteins, and urea

Question 11

an autonomic ganglion can be described as

a. the site of synapses between visceral efferent neurons
b. a site where spinal reflexes occur
c. a point of synapse between parasympathetic and sympathetic neurons
d. the place where unconscious sensations occur

Answer 11

a. the site of synapses between visceral efferent neurons

Question 12

clusters of nerve cell bodies and dendrites located within the peripheral nervous system are called:

a. nuclei
b. tracts
c. nerves
d. ganglia

Answer 12

d. ganglia

Question 13

a mass of nerve cell bodies and dendrites located within the central nervous system is a

a. sulcus
b. ganglion
c. nucleus
d. tract

Answer 13

c. nucleus

Question 14

breathing passageways:

a. increases diameter
b. decreases diameter
c. increases metabolic activity
d. decreases metabolic activity

Answer 14

a. increases diameter

Question 15

intestines:

a. increases diameter
b. decreases diameter
c. increases metabolic activity
d. decreases metabolic activity

Answer 15

d. decreases metabolic activity

Question 16

Liver:

a. increases diameter
b. decreases diameter
c. increases metabolic activity
d. decreases metabolic activity

Answer 16

c. increases metabolic activity

Question 17

Schwann cell

a. the outer nucleated layer of a certain cell
b. produces myelin sheaths
c. carries impulses way from the perikaryon
d. a covering neuron fibers
e. conducts impulses to cell body

Answer 17

b. produces myelin sheaths

Question 18

Dendrite:

a. the outer nucleated layer of a certain cell
b. produces myelin sheaths
c. carries impulses way from the perikaryon
d. a covering neuron fibers
e. conducts impulses to cell body

Answer 18

e. conducts impulses to cell body

Question 19

sensory neuron

a. carries impulses to the central nervous system
b. carries impulses to a responding organ
c. response to motor impulse
d. stimulated by one neuron and passes impulse onto another neuron
e. responds directly to changes in environment

Answer 19

a. carries impulses to the central nervous system

Question 20

Effector:

a. carries impulses to the central nervous system
b. carries impulses to a responding organ
c. response to motor impulse
d. stimulated by one neuron and passes impulse onto another neuron
e. responds directly to changes in environment

Answer 20

c. response to motor impulse

Question 21

Tasting:
A. facial
b. olfactory
c. vestibulocochlear
d. hypoglossal
e. optic

Answer 21

A. facial

Question 22

Balance:
A. facial
b. olfactory
c. vestibulocochlear
d. hypoglossal
e. optic

Answer 22

c. vestibulocochlear

Question 23

More extensive use of norepinephrine:

a. sympathetic
b. parasympathetic

Answer 23

a. sympathetic

Question 24

effects are more widespread and long lasting

a. sympathetic
b. parasympathetic

Answer 24

a. sympathetic

Question 25

elicits energy conservation and restoration

a. sympathetic
b. parasympathetic

Answer 25

b. parasympathetic