Question 1

In adults,the spinal cord is not the same length as the vertebral canal,and most of the lumbar part of the spinal cord is within

Accepted Answer

A) the coccyx. 
B) the sacrum. 
C) the cervical vertebrae. 
D) the thoracic vertebrae. 
E) the cauda equina. 
A) the coccyx. 
B) the sacrum. 
C) the cervical vertebrae. 
D) the thoracic vertebrae. 
E) the cauda equina.

Question 2

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

Question 3

If a patient experiences numbness in the boundaries of a dermatome,it is suggestive of damage to

Accepted Answer

A) the somatosensory cortex. 
B) the thalamus. 
C) one of the spinal funiculi. 
D) the anterior horn of grey matter in the spinal cord. 
E) a spinal nerve. 
A) the somatosensory cortex. 
B) the thalamus. 
C) one of the spinal funiculi. 
D) the anterior horn of grey matter in the spinal cord. 
E) a spinal nerve.

Question 4

The axons of primary sensory neurons make synaptic connections with

Accepted Answer

A) posterior root ganglia of spinal nerves. 
B) secondary neurons in the CNS. 
C) secondary neurons in the PNS. 
D) thalamic neurons. 
A) posterior root ganglia of spinal nerves. 
B) secondary neurons in the CNS. 
C) secondary neurons in the PNS. 
D) thalamic neurons.

Question 5

Motor pathways are _________ tracts that control _________.

Accepted Answer

A) ascending,affectors 
B) ascending,effectors 
C) descending,affectors 
D) descending,effectors 
A) ascending,affectors 
B) ascending,effectors 
C) descending,affectors 
D) descending,effectors

Question 6

Which of these spinal nerve counts is incorrect

Accepted Answer

A) Thoracic nerves = 8 pairs 
B) Cervical nerves = 8 pairs 
C) Lumbar nerves = 5 pairs 
D) Sacral nerves = 5 pairs 
E) Coccygeal nerves = 1 pair 
A) Thoracic nerves = 8 pairs 
B) Cervical nerves = 8 pairs 
C) Lumbar nerves = 5 pairs 
D) Sacral nerves = 5 pairs 
E) Coccygeal nerves = 1 pair

Question 7

Nuclei within the gray matter of the spinal cord that receive information from sensory receptors such as pain or pressure receptors in the skin are _____ nuclei.

Accepted Answer

A) visceral sensory 
B) somatic sensory 
C) autonomic motor 
D) somatic motor 
A) visceral sensory 
B) somatic sensory 
C) autonomic motor 
D) somatic motor

Question 8

The innermost of the meninges is the pia mater.

Accepted Answer

A) True 
 B)False

Question 9

The second thoracic spinal nerve exits the spinal column through the

Accepted Answer

A) vertebral canal of vertebrae T1,T2,and T3. 
B) sacral hiatus. 
C) intervertebral foramen between vertebrae T2 and T3. 
D) intervertebral foramen between vertebrae T1 and T2. 
A) vertebral canal of vertebrae T1,T2,and T3. 
B) sacral hiatus. 
C) intervertebral foramen between vertebrae T2 and T3. 
D) intervertebral foramen between vertebrae T1 and T2.

Question 10

A monosynaptic response is one that does not involve an interneuron.

Accepted Answer

A) True 
 B)False

Question 11

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 motor 
A) visceral sensory 
B) somatic sensory 
C) autonomic motor 
D) somatic motor

Question 12

The anterior ramus of a typical spinal nerve innervates the

Accepted Answer

A) deep muscles of the back and the skin of the back. 
B) major thoracic and abdominal organs. 
C) abdominal wall. 
D) anterior and lateral trunk and the limbs. 
E) special senses. 
A) deep muscles of the back and the skin of the back. 
B) major thoracic and abdominal organs. 
C) abdominal wall. 
D) anterior and lateral trunk and the limbs. 
E) special senses.

Question 13

The tapered,conical inferior end of the spinal cord is called the conus

Accepted Answer

A) finalis. 
B) medullaris. 
C) equine. 
D) caudalis. 
E) sacralis. 
A) finalis. 
B) medullaris. 
C) equine. 
D) caudalis. 
E) sacralis.

Question 14

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. 
A) posterior root ganglion. 
B) anterior funiculus. 
C) gray commissure. 
D) anterior horn. 
E) posterior funiculus.

Question 15

Usually,awareness of the stimulus occurs before a reflex action has been initiated.

Accepted Answer

A) True 
 B)False

Question 16

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

Accepted Answer

A) True 
 B)False

Question 17

A person suffering from carpal tunnel syndrome has lost function of the

Accepted Answer

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

Question 18

If a person suffers a thorax-crushing injury and is unable to breathe properly,you would suspect that this nerve was damaged.

Accepted Answer

A) Transverse cervical nerve 
B) Accessory nerve 
C) Phrenic nerve 
D) Sciatic nerve 
E) Greater auricular nerve 
A) Transverse cervical nerve 
B) Accessory nerve 
C) Phrenic nerve 
D) Sciatic nerve 
E) Greater auricular nerve

Question 19

Axons of the corticobulbar tracts

Accepted Answer

A) descend in the lateral funiculus of the spinal cord and synapse with anterior horn motor neurons. 
B) descend in the anterior funiculus of the spinal cord and synapse with lateral horn motor neurons. 
C) do not pass through the spinal cord,as they synapse with lower motor neurons in brainstem cranial nuclei. 
D) do not pass through the spinal cord,as they synapse with cerebellar Purkinje cells. 
E) connect the supplementary motor cortex with the primary motor cortex. 
A) descend in the lateral funiculus of the spinal cord and synapse with anterior horn motor neurons. 
B) descend in the anterior funiculus of the spinal cord and synapse with lateral horn motor neurons. 
C) do not pass through the spinal cord,as they synapse with lower motor neurons in brainstem cranial nuclei. 
D) do not pass through the spinal cord,as they synapse with cerebellar Purkinje cells. 
E) connect the supplementary motor cortex with the primary motor cortex.

Question 20

The simple knee-jerk reflex is an example of a(n)_____ reflex.

Accepted Answer

A) ipsilateral 
B) contralateral 
C) monosynaptic 
D) crossed-extensor 
E) multisynaptic 
A) ipsilateral 
B) contralateral 
C) monosynaptic 
D) crossed-extensor 
E) multisynaptic

Exam 14: Nervous System: Spinal Cord and Spinal Nerves

In adults,the spinal cord is not the same length as the vertebral canal,and most of the lumbar part of the spinal cord is within

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

If a patient experiences numbness in the boundaries of a dermatome,it is suggestive of damage to

The axons of primary sensory neurons make synaptic connections with

Motor pathways are _________ tracts that control _________.

Which of these spinal nerve counts is incorrect

Nuclei within the gray matter of the spinal cord that receive information from sensory receptors such as pain or pressure receptors in the skin are _____ nuclei.

The innermost of the meninges is the pia mater.

The second thoracic spinal nerve exits the spinal column through the

A monosynaptic response is one that does not involve an interneuron.

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

The anterior ramus of a typical spinal nerve innervates the

The tapered,conical inferior end of the spinal cord is called the conus

The cell bodies of sensory neurons are located in the

Usually,awareness of the stimulus occurs before a reflex action has been initiated.

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

A person suffering from carpal tunnel syndrome has lost function of the

If a person suffers a thorax-crushing injury and is unable to breathe properly,you would suspect that this nerve was damaged.

Axons of the corticobulbar tracts

The simple knee-jerk reflex is an example of a(n)_____ reflex.

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