Question 1

The odd tingling sensation that you experiences when you hit the funny bone is due to trauma to the nerve.

Accepted Answer

A)   radial
B)   ulnar
C)   median
D)   axillary

Question 2

Ventral roots of spinal nerves are purely or primarily _.

Accepted Answer

A)   motor
B)   mixed sensory and motor
C)   sensory

Question 3

The ventral rami of spinal nerves form the major nerve plexuses.

Accepted Answer

A)   T2 through T12
B)   C1 through T1
C)   C1 through T1 and L1 through S4
D)   L1 through S4

Question 4

This nerve of the brachial plexus supplies all the extensor muscles of the upper limb.

Accepted Answer

A)   median
B)   musculocutaneous
C)   ulnar
D)   radial

Question 5

The varicella zoster virus causing chicken pox can stay dormant in the sensory neurons in the dorsal root ganglion. It can get reactivated later on in life causing .

Accepted Answer

A)   sciatica
B)   quadriplegia
C)   hemiplegia
D)   shingles

Question 6

These fiber tracts run between the dorsal horns.

Accepted Answer

A)   spinocerebellar tracts
B)   dorsal white columns
C)   spinothalamic tracts
D)   corticospinal tracts

Question 7

In addition to its role in spinal reflex activity, the spinal cord also _ .

Accepted Answer

A)   controls movement of the limbs
B)   contains sensory and motor tracts traveling to and from higher nervous centers
C)   is associated with consciousness
D)   perceives sensation

Question 8

These ascending (sensory)  tracts are the most lateral ones between the dorsal and ventral roots of the spinal cord.

Accepted Answer

A)   corticospinal tracts
B)   spinothalamic tracts
C)   spinocerebellar tracts
D)   dorsal white columns

Question 9

The following represents a collection of spinal nerve roots hanging from the inferior end of the spinal cord.

Accepted Answer

A)   dorsal roots
B)   filum terminale
C)   denticulate ligament
D)   cauda equina

Question 10

How many pairs of spinal nerves are present in humans?

Accepted Answer

A)   24
B)   29
C)   28
D)   31

Question 11

This nerve, arising from the cervical plexus, is essential for normal breathing.

Accepted Answer

A)   lesser occipital
B)   phrenic
C)   greater auricular
D)   transverse cervical

Question 12

The meninges that cover the spinal cord from outermost to innermost are .

Accepted Answer

A)   dura mater, arachnoid mater, pia mater
B)   pia mater, arachnoid mater, dura mater
C)   dura mater, pia mater, arachnoid mater
D)   arachnoid mater, dura mater, pia mater A

Question 13

Damage to the lumbar plexus is likely to affect .

Accepted Answer

A)   flexion of the knee
B)   adduction of the thigh
C)   extension of the knee
D)   dorsiflexion of the foot

Question 14

These fiber tracts carry signals about voluntary movement to the spinal cord.

Accepted Answer

A)   corticospinal tracts
B)   dorsal white columns
C)   spinothalamic tracts
D)   spinocerebellar tracts A

Question 15

These horns of the spinal cord are present only in the thoracic and lumbar regions.

Accepted Answer

A)   ventral
B)   lateral
C)   dorsal

Question 16

Somatosensory functions are carried out in this part of the spinal cord.

Accepted Answer

A)   lateral and ventral fiber tracts and ventral horns
B)   dorsal white columns and dorsal horns
C)   lateral fiber tracts and lateral horns
D)   ventral fiber tracts and ventral horns B

Question 17

The spinal nerves are nerves.

Accepted Answer

A)   motor
B)   sensory
C)   mixed

Question 18

This extension of one of the meninges covering the spinal cord attaches it to the coccyx.

Accepted Answer

A)   dura mater
B)   conus medullaris
C)   denticulate ligament
D)   filum terminale

Question 19

Transection of the dorsal roots of spinal nerves C5 through T1 results in .

Accepted Answer

A)   loss of movement in the upper limb on the opposite side of the body
B)   loss of movement in the upper limb on the same side of the body
C)   loss of sensation in the upper limb on the same side of the body
D)   loss of sensation in the upper limb on the opposite side of the body

Question 20

Nerves serving the lower limb issue from this enlargement of the spinal cord.

Accepted Answer

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

Exam 19: The Spinal Cord and Spinal Nerves

The odd tingling sensation that you experiences when you hit the funny bone is due to trauma to the nerve.

Correct AnswerverifiedShow Answer

Ventral roots of spinal nerves are purely or primarily _.

Correct AnswerverifiedShow Answer

The ventral rami of spinal nerves form the major nerve plexuses.

Correct AnswerverifiedShow Answer

This nerve of the brachial plexus supplies all the extensor muscles of the upper limb.

Correct AnswerverifiedShow Answer

The varicella zoster virus causing chicken pox can stay dormant in the sensory neurons in the dorsal root ganglion. It can get reactivated later on in life causing .

Correct AnswerverifiedShow Answer

These fiber tracts run between the dorsal horns.

Correct AnswerverifiedShow Answer

In addition to its role in spinal reflex activity, the spinal cord also _ .

Correct AnswerverifiedShow Answer

These ascending (sensory) tracts are the most lateral ones between the dorsal and ventral roots of the spinal cord.

Correct AnswerverifiedShow Answer

The following represents a collection of spinal nerve roots hanging from the inferior end of the spinal cord.

Correct AnswerverifiedShow Answer

How many pairs of spinal nerves are present in humans?

Correct AnswerverifiedShow Answer

This nerve, arising from the cervical plexus, is essential for normal breathing.

Correct AnswerverifiedShow Answer

The meninges that cover the spinal cord from outermost to innermost are .

Correct AnswerverifiedA

Damage to the lumbar plexus is likely to affect .

Correct AnswerverifiedShow Answer

These fiber tracts carry signals about voluntary movement to the spinal cord.

Correct AnswerverifiedA

These horns of the spinal cord are present only in the thoracic and lumbar regions.

Correct AnswerverifiedShow Answer

Somatosensory functions are carried out in this part of the spinal cord.

Correct AnswerverifiedB

The spinal nerves are nerves.

Correct AnswerverifiedShow Answer

This extension of one of the meninges covering the spinal cord attaches it to the coccyx.

Correct AnswerverifiedShow Answer

Transection of the dorsal roots of spinal nerves C5 through T1 results in .

Correct AnswerverifiedShow Answer

Nerves serving the lower limb issue from this enlargement of the spinal cord.

Correct AnswerverifiedShow Answer

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