Question 1

The function of upper motor neurons is to

Accepted Answer

A)   directly excite skeletal muscle cells.
B)   excite or inhibit skeletal muscle cells.
C)   excite or inhibit lower motor neurons.
D)   excite motor portions of the thalamus.
E)   excite or inhibit motor portions of the cerebral cortex.F) A) and B)
G) B) and D)

Question 2

The medial lemniscus is

Accepted Answer

A)   gray matter in the spinal cord that processes information about proprioception and touch.
B)   gray matter in the spinal cord that processes information about pain and temperature.
C)   white matter in the brainstem that conducts information about proprioception and touch.
D)   white matter in the brainstem that conducts information about pain and temperature.E) A) and B)
F) B) and C)

Question 3

These nuclei are located in the lateral horns and innervate smooth muscle, cardiac muscle, and glands.

Accepted Answer

A)   Sensory nuclei
B)   Autonomic motor nuclei
C)   Visceral sensory nuclei
D)   Somatic sensory nuclei
E)   Somatic motor nucleiF) A) and E)
G) A) and D)

Question 4

The ________ nuclei within the gray matter of the spinal cord send nerve impulses to skeletal muscles.

Accepted Answer

A)   visceral sensory
B)   somatic sensory
C)   autonomic motor
D)   somatic motorE) B) and D)
F) All of the above

Question 5

In the spinal cord, white matter surrounds (is external to) the gray matter.

Accepted Answer

A) True 
 B)False

Question 6

Following an injury to his arm, a patient complains that he cannot extend the forearm, wrist, and digits. You suspect that he has damaged the

Accepted Answer

A)   median nerve.
B)   radial nerve.
C)   musculocutaneous nerve.
D)   ulnar nerve.
E)   axillary nerve.F) A) and E)
G) C) and E)

Question 7

The plexuses that lie on either side of the neck are the ________ plexuses.

Accepted Answer

A)   cervical
B)   brachial
C)   lumbar
D)   radial
E)   mandibularF) A) and D)
G) B) and D)

Question 8

The inferior tip of the spinal cord is the ________ part.

Accepted Answer

A)   thoracic
B)   lumbar
C)   coccygeal
D)   cervical
E)   sacralF) A) and D)
G) None of the above

Question 9

The tectospinal tract is part of the medial pathway, which is an indirect motor pathway.

Accepted Answer

A) True 
 B)False

Question 10

The cell bodies of sensory neurons are located in the

Accepted Answer

A)   posterior root ganglion.
B)   anterior funiculus.
C)   gray commissure.
D)   anterior horn.
E)   posterior funiculus.F) A) and D)
G) None of the above

Question 11

The cervical plexus is formed by the

Accepted Answer

A)   posterior rami of spinal nerves C2-C6.
B)   posterior rami of spinal nerves C4-C8.
C)   anterior rami of spinal nerves C1-C4.
D)   anterior rami of spinal nerves C3-C7.
E)   rami communicantes of spinal nerves C1-C7.F) D) and E)
G) B) and D)

Question 12

Which of the following structures is closest to the spinal cord?

Accepted Answer

A)   Posterior ramus
B)   Posterior root ganglion
C)   Posterior rootlets
D)   Posterior rootE) A) and B)
F) None of the above

Question 13

The common fibular nerve originated from which nerve plexus?

Accepted Answer

A)   Lumbar
B)   Sacral
C)   Brachial
D)   CervicalE) B) and C)
F) A) and B)

Question 14

Motor pathways are also called ascending pathways.

Accepted Answer

A) True 
 B)False

Question 15

What is a likely result of damage to the phrenic nerve?

Accepted Answer

A)   Loss of motor control of the thoracic diaphragm.
B)   Inability to flex the elbow
C)   Lack of sensation from the anterior thigh
D)   Inability to flex the torsoE) B) and D)
F) None of the above

Question 16

Anatomy of the spinal cord & spinal nerves. 
-This figure shows spinal nerve branches. What structures are indicated by number 4?

Accepted Answer

A)   Anterior rami
B)   Posterior rami
C)   Rami communicantes
D)   Sympathetic trunk ganglia
E)   Posterior root gangliaF) A) and B)
G) B) and C)

Question 17

Which statement accurately describes spinal nerves?

Accepted Answer

A)   Most spinal nerves are motor nerves.
B)   Each spinal nerve is mixed in that it contains some sensory axons and some motor axons.
C)   All spinal nerves are sensory nerves.
D)   Odd-numbered spinal nerves are sensory and even-numbered spinal nerves are motor.
E)   Spinal nerves are central axons contained within the vertebral canal.F) C) and D)
G) A) and B)

Question 18

The nerve that innervates the deltoid muscle and receives sensory input from the superolateral arm is the

Accepted Answer

A)   axillary nerve.
B)   musculocutaneous nerve.
C)   median nerve.
D)   radial nerve.
E)   ulnar nerve.F) A) and B)
G) D) and E)

Question 19

Anatomy of the spinal cord & spinal nerves. 
-This figure shows neuron pathways and nuclei locations. What type of nuclei does number 1 indicate?

Accepted Answer

A)   Somatic motor nuclei
B)   Autonomic motor nuclei
C)   Visceral sensory nuclei
D)   Somatic sensory nuclei
E)   None of the choices is correctF) A) and E)
G) B) and D)

Question 20

Paired, lateral triangular extensions of the spinal pia mater that extend to the dura to suspend and anchor the spinal cord are known as ________ ligaments.

Accepted Answer

The answer of Paired, lateral triangular extensions of the spinal...

Exam 14: Nervous System: Spinal Cord and Spinal Nerves

Motor pathways are also called ascending pathways.

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Anatomy of the spinal cord & spinal nerves. -This figure shows neuron pathways and nuclei locations. What type of nuclei does number 1 indicate?

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The medial lemniscus is

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Which statement accurately describes spinal nerves?

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The common fibular nerve originated from which nerve plexus?

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What is a likely result of damage to the phrenic nerve?

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The inferior tip of the spinal cord is the ________ part.

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The function of upper motor neurons is to

Correct AnswerverifiedShow Answer

The cervical plexus is formed by the

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In the spinal cord, white matter surrounds (is external to) the gray matter.

Correct AnswerverifiedShow Answer

The plexuses that lie on either side of the neck are the ________ plexuses.

Correct AnswerverifiedShow Answer

Following an injury to his arm, a patient complains that he cannot extend the forearm, wrist, and digits. You suspect that he has damaged the

Correct AnswerverifiedShow Answer

The nerve that innervates the deltoid muscle and receives sensory input from the superolateral arm is the

Correct AnswerverifiedShow Answer

Which of the following structures is closest to the spinal cord?

Correct AnswerverifiedShow Answer

The cell bodies of sensory neurons are located in the

Correct AnswerverifiedShow Answer

Paired, lateral triangular extensions of the spinal pia mater that extend to the dura to suspend and anchor the spinal cord are known as ________ ligaments.

Correct AnswerverifiedShow Answer

The ________ nuclei within the gray matter of the spinal cord send nerve impulses to skeletal muscles.

Correct AnswerverifiedShow Answer

These nuclei are located in the lateral horns and innervate smooth muscle, cardiac muscle, and glands.

Correct AnswerverifiedShow Answer

The tectospinal tract is part of the medial pathway, which is an indirect motor pathway.

Correct AnswerverifiedShow Answer

Anatomy of the spinal cord & spinal nerves. -This figure shows spinal nerve branches. What structures are indicated by number 4?

Correct AnswerverifiedShow Answer

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