Deck 7: The Peripheral Nervous System

Question 1

There are _______ pairs of spinal nerves that emerge from the spinal cord.

A) 21
B) 31
C) 6
D) 17

Answer 1

B

Question 2

The _______ division works automatically to maintain a steady state within the body.

A) somatic
B) peripheral nervous
C) central nervous
D) autonomic

Answer 2

D

Question 3

The somatic system includes _______.

A) the sensory receptors that react to changes in the outside world
B) the afferent neurons that keep the CNS informed of those changes
C) the efferent neurons that signal the muscles to respond
D) all of the preceding answers are correct

Answer 3

D

Question 4

The _______ consists of efferent (motor) fibers leaving the spinal cord.

A) ventral root
B) spinal ganglion
C) dorsal root
D) afferent root

Question 5

In the parasympathetic system, first efferent neurons synapse with second efferent neurons in _______, located near or within the walls of organs they innervate.

A) collateral ganglia
B) ganglion chains
C) terminal ganglia
D) postganglionic neurons

Question 6

Cranial nerve I innervates the _______.

A) retina of the eye
B) olfactory epithelium
C) many organs, including lungs and stomach
D) teeth

Question 7

Branches of the _______ nerve innervate the heart, lungs, liver, pancreas, esophagus, stomach, small intestine, and upper portion of the large intestine.

A) trigeminal
B) optic
C) olfactory
D) vagus

Question 8

Parasympathetic nerves _______.

A) dilate the bronchial tubes
B) stimulate sweat glands
C) decrease heart rate
D) dilate the pupils

Question 9

The optic nerve _______.

A) is the first cranial nerve
B) innervates the olfactory epithelium
C) innervates the eyeball muscles
D) innervates the retina of the eye

Question 10

The portion of the peripheral nervous system that keeps the body in adjustment with the outside world is the _______ division.

A) somatic
B) autonomic
C) sympathetic
D) external

Question 11

The _______ receives sensory information from the back of the head, neck, shoulders, and upper chest.

A) cervical plexus
B) brachial plexus
C) lumbar plexus
D) sacral plexus

Question 12

The _______ supplies the lower abdominal wall, buttock, thigh, and genital structures.

A) cervical plexus
B) brachial plexus
C) lumbar plexus
D) sacral plexus

Question 13

Which neurons release the neurotransmitter norepinephrine?

A) Preganglionic neurons of the sympathetic system
B) Postganglionic neurons of the sympathetic system
C) Preganglionic neurons of the parasympathetic system
D) Postganglionic neurons of the parasympathetic system

Question 14

Neurons of the parasympathetic system emerge from the brain and the _______ region of the spinal cord.

A) sacral
B) brachial
C) coccygeal
D) cervical

Question 15

The semicircular canals of the inner ear are innervated by the _______ nerve.

A) vestibulocochlear
B) vagus
C) trigeminal
D) hypoglossal

Question 16

The _______ consists of afferent (sensory) fibers that transmit information from the sensory receptors to the spinal cord.

A) ventral root
B) spinal ganglion
C) dorsal root
D) efferent root

Question 17

The _______ nervous system is made up of the sensory receptors, the nerves that link sensory receptors with the central nervous system (CNS), and the nerves that link the CNS with effectors.

A) sympathetic
B) parasympathetic
C) peripheral
D) sensory

Question 18

Some axons of the second efferent neurons leave a ganglion of the paravertebral sympathetic ganglion chain as various _______ nerves.

A) postsympathetic
B) sympathetic
C) brachial
D) somatic

Question 19

The _______ system prepares the body for action and is most active during stressful situations.

A) autonomic
B) sympathetic
C) somatic
D) parasympathetic

Question 20

The _______ of each nerve supplies the muscles and skin of the posterior part of the body in that region.

A) ventral branch
B) cervical plexus
C) dorsal branch
D) lateral branch

Question 21

About 75% of all parasympathetic fibers are in the _______ nerves.

A) optic
B) phrenic
C) trigeminal
D) vagus

Question 22

The main branch of the sacral plexus is the _______ nerve, the largest nerve in the body.

A) vagus
B) phrenic
C) femoral
D) sciatic

Question 23

There are _______ pairs of cervical spinal nerves, _______ pairs of thoracic spinal nerves, and _______ pairs of lumbar spinal nerves.

A) 5; 12; 8
B) 5; 8; 12
C) 8; 12; 5
D) 8; 5; 12

Question 24

Preganglionic neurons of the sympathetic system release the neurotransmitter _______ and are referred to as cholinergic.

A) acetylcholine
B) norepinephrine
C) epinephrine
D) dopamine

Question 25

Postganglionic neurons of the sympathetic system release the neurotransmitter _______ and are referred to as adrenergic.

A) acetylcholine
B) norepinephrine
C) epinephrine
D) dopamine

Question 26

The peripheral nervous system consists of _______.

A) somatic and sympathetic divisions
B) somatic and parasympathetic divisions
C) PNS and CNS
D) somatic and autonomic divisions

Question 27

Neurons from the _______ region innervate the eye, structures of the head, and thoracic and abdominal organs.

A) cranial
B) sacral
C) lumbar
D) thoracic

Question 28

Both preganglionic and postganglionic fibers of the parasympathetic system release the neurotransmitter _______.

A) acetylcholine
B) norepinephrine
C) epinephrine
D) dopamine

Question 29

The _______ branch innervates the anterior and lateral body trunk, as well as the limbs.

A) ventral
B) brachial
C) dorsal
D) gluteal

Question 30

Second efferent neurons are ______ neurons.

A) ganglionic
B) preganglionic
C) postganglionic
D) cholinergic

Question 31

The _______ system is most active during periods of calm and physical rest.

A) sympathetic
B) paravertebral
C) parasympathetic
D) peripheral nervous

Question 32

The _______ nerve, which sends impulses to the diaphragm, arises from the cervical plexus.

A) respiratory
B) phrenic
C) femoral
D) sciatic

Question 33

The digestive system is mainly under _______ control.

A) sympathetic
B) autonomic
C) parasympathetic
D) somatic

Question 34

The teeth are innervated by the _______ nerve.

A) trigeminal
B) vagus
C) facial
D) hypoglossal

Question 35

The _______ nerve is the largest nerve arising from the lumbar plexus.

A) ulnar
B) phrenic
C) femoral
D) sciatic

Question 36

In the autonomic division, the first efferent neurons are referred to as _______ neurons.

A) ganglionic
B) preganglionic
C) postganglionic
D) adrenergic

Question 37

Cranial nerve II is the _______ nerve.

A) oculomotor
B) vagus
C) optic
D) olfactory

Question 38

The parasympathetic nerves that emerge from the _______ region form the pelvic nerves.

A) cranial
B) sacral
C) lumbar
D) thoracic

Question 39

Each spinal ganglion consists of _______.

A) efferent fibers leaving the spinal cord
B) cell bodies of sensory neurons
C) cell bodies of motor neurons
D) cell bodies of neurons that make up the major plexuses

Question 40

The heart rate is increased by _______ stimulation.

A) somatic
B) vagal
C) parasympathetic
D) sympathetic

Question 41

Fill in the correct labels for the following figure using the word bank below.

a.Ganglion
b.Afferent neuron
c.Interneuron
d.First efferent neuron
e.Spinal cord
f.Second efferent neuron
F __________

Question 42

Fill in the correct labels for the following figure using the word bank below.

a.Ganglion
b.Afferent neuron
c.Interneuron
d.First efferent neuron
e.Spinal cord
f.Second efferent neuron
B __________

Question 43

MATCHING
Fill in the correct labels for the following figure using the word bank below.

a.Ventral root
b.Spinal ganglion
c.Autonomic branch
d.White matter
e.Spinal nerve
f.Ventral branch
g.Gray matter
h.Dorsal root
i.Dorsal branch
E ___________

Question 44

MATCHING
Fill in the correct labels for the following figure using the word bank below.

a.Ventral root
b.Spinal ganglion
c.Autonomic branch
d.White matter
e.Spinal nerve
f.Ventral branch
g.Gray matter
h.Dorsal root
i.Dorsal branch
F ___________

Question 45

MATCHING
Fill in the correct labels for the following figure using the word bank below.

a.Ventral root
b.Spinal ganglion
c.Autonomic branch
d.White matter
e.Spinal nerve
f.Ventral branch
g.Gray matter
h.Dorsal root
i.Dorsal branch
D ___________

Question 46

MATCHING
Fill in the correct labels for the following figure using the word bank below.

a.Ventral root
b.Spinal ganglion
c.Autonomic branch
d.White matter
e.Spinal nerve
f.Ventral branch
g.Gray matter
h.Dorsal root
i.Dorsal branch
C ___________

Question 47

MATCHING
Fill in the correct labels for the following figure using the word bank below.

a.Ventral root
b.Spinal ganglion
c.Autonomic branch
d.White matter
e.Spinal nerve
f.Ventral branch
g.Gray matter
h.Dorsal root
i.Dorsal branch
G ___________

Question 48

MATCHING
Fill in the correct labels for the following figure using the word bank below.

a.Ventral root
b.Spinal ganglion
c.Autonomic branch
d.White matter
e.Spinal nerve
f.Ventral branch
g.Gray matter
h.Dorsal root
i.Dorsal branch
A ___________

Question 49

MATCHING
Fill in the correct labels for the following figure using the word bank below.

a.Ventral root
b.Spinal ganglion
c.Autonomic branch
d.White matter
e.Spinal nerve
f.Ventral branch
g.Gray matter
h.Dorsal root
i.Dorsal branch
H ___________

Question 50

Fill in the correct labels for the following figure using the word bank below.

a.Ganglion
b.Afferent neuron
c.Interneuron
d.First efferent neuron
e.Spinal cord
f.Second efferent neuron
E __________

Question 51

MATCHING
Fill in the correct labels for the following figure using the word bank below.

a.Ventral root
b.Spinal ganglion
c.Autonomic branch
d.White matter
e.Spinal nerve
f.Ventral branch
g.Gray matter
h.Dorsal root
i.Dorsal branch
B ___________

Question 52

Fill in the correct labels for the following figure using the word bank below.

a.Ganglion
b.Afferent neuron
c.Interneuron
d.First efferent neuron
e.Spinal cord
f.Second efferent neuron
D __________

Question 53

How would messages from the brain be affected if the spinal cord became damaged?

Question 54

Fill in the correct labels for the following figure using the word bank below.

a.Ganglion
b.Afferent neuron
c.Interneuron
d.First efferent neuron
e.Spinal cord
f.Second efferent neuron
A __________

Question 55

Fill in the correct labels for the following figure using the word bank below.

a.Ganglion
b.Afferent neuron
c.Interneuron
d.First efferent neuron
e.Spinal cord
f.Second efferent neuron
C __________

Question 56

MATCHING
Fill in the correct labels for the following figure using the word bank below.

a.Ventral root
b.Spinal ganglion
c.Autonomic branch
d.White matter
e.Spinal nerve
f.Ventral branch
g.Gray matter
h.Dorsal root
i.Dorsal branch
I ___________