Question 1

The anterior root and posterior root fuse to form a(n) :

Accepted Answer

A)  posterior horn.
B)  posterior (dorsal) root ganglion.
C)  spinal nerve.
D)  anterior horn.E) None of the above
F) A) and B)

Question 2

Motor control is initiated by lower motor neurons and transmitted to upper motor neurons by interneurons situated within the CNS.

Accepted Answer

A) True 
 B)False

Question 3

The visceral motor division (autonomic nervous system,or ANS)controls the body's voluntary motor functions.

Accepted Answer

A) True 
 B)False

Question 4

Potentially damaging stimuli that result in pain are selectively detected by:

Accepted Answer

A)  nociceptors.
B)  proprioceptors.
C)  photoreceptors.
D)  chemoreceptors.E) None of the above
F) B) and C)

Question 5

Which of the following does NOT belong to the brachial plexus?

Accepted Answer

A)  ulnar nerve
B)  median nerve
C)  phrenic nerve
D)  musculocutaneous nerveE) A) and B)
F) None of the above

Question 6

What part of the nervous system integrates and interprets information from PNS sensory neurons?

Accepted Answer

A)  visceral motor division,or autonomic nervous system (ANS) 
B)  sensory (afferent) division
C)  central nervous system (CNS) 
D)  somatic nervous system (SNS) E) A) and D)
F) B) and C)

Question 7

Receptive field maps show the regions of skin and the spinal nerve that supplies somatic sensation to them.

Accepted Answer

A) True 
 B)False

Question 8

What connects the upper motor neurons to lower motor neurons?

Accepted Answer

A)  interneurons
B)  primary afferent neuron
C)  sensory neurons
D)  muscle fibersE) All of the above
F) A) and B) A

Question 9

Generalize the role of the lower motor neuron in motor control.

Accepted Answer

Upper motor neurons,located in the primary motor cortex of the cerebrum,stimulate lower motor neurons.Lower motor neurons innervate skeletal muscle fibers within a single skeletal muscle.Lower motor neurons initiate a muscle contraction.Groups of lower motor neurons that innervate the same muscle are called motor neuron pools.

Question 10

Which of the following does NOT characterize a reflex?

Accepted Answer

A)  Reflexes require a stimulus to initiate a motor response.
B)  A reflex is an automatic response to a stimulus.
C)  The motor response to a stimulus is rapid.
D)  Neural integration of a reflex usually occurs in the PNS.E) None of the above
F) A) and C)

Question 11

Dan injured the spinal nerves emerging from the lower lumbar and sacral region of the spinal cord during a horse-riding accident.After his injury,he reported numbness in his feet.Explain the connection between the loss of sensation he has described and the plexus responsible for serving this area.

Accepted Answer

The sacral plexus forms from the anterio...

Question 12

Which division of the peripheral nervous system (PNS) detects stimuli and carries them to the central nervous system (CNS) ?

Accepted Answer

A)  autonomic
B)  motor
C)  sympathetic
D)  sensoryE) A) and C)
F) B) and D)

Question 13

People suspected of having a stroke can be asked to stick their tongues straight out.A slanted or somewhat bent tongue may be just one indicator of stroke.Determine the cranial nerve affected if the tongue is bent or slanted and identify the nerve as sensory,motor,or mixed.Describe the function of this nerve.

Accepted Answer

The affected nerve if the tongue is bent...

Question 14

In the crossed-extension reflex,if the right leg flexes,then the left leg:

Accepted Answer

A)  extends.
B)  abducts.
C)  adducts.
D)  flexes.E) None of the above
F) B) and D) A

Question 15

List the cranial nerves and their corresponding Roman numerals that are generally considered sensory nerves.

Accepted Answer

The cranial nerves that genera...

Question 16

What is the outermost connective tissue covering of a nerve?

Accepted Answer

A)  perineurium
B)  endoneurium
C)  epineurium
D)  epimysiumE) B) and C)
F) A) and C)

Question 17

A patient sustained an injury to the lower motor neurons when a board fell on his back at a construction site.The upper motor neurons are intact and undamaged.Determine the effect,if any,on motor control.

Accepted Answer

The upper motor neurons stimulate the lo...

Question 18

Which cranial nerve detects smell?

Accepted Answer

A)  olfactory nerve (I) 
B)  trochlear nerve (IV) 
C)  oculomotor nerve (III) 
D)  optic nerve (II) E) A) and B)
F) A) and C)

Question 19

Outline the three-step sequence of a reflex arc.

Accepted Answer

The reflex arc begins with 1)the detecti...

Question 20

You feel a mosquito land on your arm.This stimulus is carried to the central nervous system (CNS) by the:

Accepted Answer

A)  visceral motor division (autonomic nervous system) .
B)  visceral sensory division.
C)  somatic sensory division.
D)  somatic motor division.E) A) and B)
F) A) and D)

Exam 13: The Peripheral Nervous System

The anterior root and posterior root fuse to form a(n) :

Correct Answer
verified

Motor control is initiated by lower motor neurons and transmitted to upper motor neurons by interneurons situated within the CNS.

Correct Answer
verified

The visceral motor division (autonomic nervous system,or ANS)controls the body's voluntary motor functions.

Correct Answer
verified

Potentially damaging stimuli that result in pain are selectively detected by:

Correct Answer
verified

Which of the following does NOT belong to the brachial plexus?

Correct Answer
verified

What part of the nervous system integrates and interprets information from PNS sensory neurons?

Correct Answer
verified

Receptive field maps show the regions of skin and the spinal nerve that supplies somatic sensation to them.

Correct Answer
verified

What connects the upper motor neurons to lower motor neurons?

Correct Answer
verified
A

Generalize the role of the lower motor neuron in motor control.

Which of the following does NOT characterize a reflex?

Correct Answer
verified

Dan injured the spinal nerves emerging from the lower lumbar and sacral region of the spinal cord during a horse-riding accident.After his injury,he reported numbness in his feet.Explain the connection between the loss of sensation he has described and the plexus responsible for serving this area.

Correct Answer
verified
The sacral plexus forms from the anterio...
View Answer

Which division of the peripheral nervous system (PNS) detects stimuli and carries them to the central nervous system (CNS) ?

Correct Answer
verified

Correct Answer
verified
The affected nerve if the tongue is bent...
View Answer

In the crossed-extension reflex,if the right leg flexes,then the left leg:

Correct Answer
verified
A

List the cranial nerves and their corresponding Roman numerals that are generally considered sensory nerves.

Correct Answer
verified
The cranial nerves that genera...
View Answer

What is the outermost connective tissue covering of a nerve?

Correct Answer
verified

A patient sustained an injury to the lower motor neurons when a board fell on his back at a construction site.The upper motor neurons are intact and undamaged.Determine the effect,if any,on motor control.

Correct Answer
verified
The upper motor neurons stimulate the lo...
View Answer

Which cranial nerve detects smell?

Correct Answer
verified

Outline the three-step sequence of a reflex arc.

Correct Answer
verified
The reflex arc begins with 1)the detecti...
View Answer

You feel a mosquito land on your arm.This stimulus is carried to the central nervous system (CNS) by the:

Correct Answer
verified

Exam 13: The Peripheral Nervous System

The anterior root and posterior root fuse to form a(n) :

Correct AnswerverifiedShow Answer

Motor control is initiated by lower motor neurons and transmitted to upper motor neurons by interneurons situated within the CNS.

Correct AnswerverifiedShow Answer

The visceral motor division (autonomic nervous system,or ANS)controls the body's voluntary motor functions.

Correct AnswerverifiedShow Answer

Potentially damaging stimuli that result in pain are selectively detected by:

Correct AnswerverifiedShow Answer

Which of the following does NOT belong to the brachial plexus?

Correct AnswerverifiedShow Answer

What part of the nervous system integrates and interprets information from PNS sensory neurons?

Correct AnswerverifiedShow Answer

Receptive field maps show the regions of skin and the spinal nerve that supplies somatic sensation to them.

Correct AnswerverifiedShow Answer

What connects the upper motor neurons to lower motor neurons?

Correct AnswerverifiedA

Generalize the role of the lower motor neuron in motor control.

Which of the following does NOT characterize a reflex?

Correct AnswerverifiedShow Answer

Dan injured the spinal nerves emerging from the lower lumbar and sacral region of the spinal cord during a horse-riding accident.After his injury,he reported numbness in his feet.Explain the connection between the loss of sensation he has described and the plexus responsible for serving this area.

Correct AnswerverifiedThe sacral plexus forms from the anterio...View AnswerShow Answer

Which division of the peripheral nervous system (PNS) detects stimuli and carries them to the central nervous system (CNS) ?

Correct AnswerverifiedShow Answer

Correct AnswerverifiedThe affected nerve if the tongue is bent...View AnswerShow Answer

In the crossed-extension reflex,if the right leg flexes,then the left leg:

Correct AnswerverifiedA

List the cranial nerves and their corresponding Roman numerals that are generally considered sensory nerves.

Correct AnswerverifiedThe cranial nerves that genera...View AnswerShow Answer

What is the outermost connective tissue covering of a nerve?

Correct AnswerverifiedShow Answer

A patient sustained an injury to the lower motor neurons when a board fell on his back at a construction site.The upper motor neurons are intact and undamaged.Determine the effect,if any,on motor control.

Correct AnswerverifiedThe upper motor neurons stimulate the lo...View AnswerShow Answer

Which cranial nerve detects smell?

Correct AnswerverifiedShow Answer

Outline the three-step sequence of a reflex arc.

Correct AnswerverifiedThe reflex arc begins with 1)the detecti...View AnswerShow Answer

You feel a mosquito land on your arm.This stimulus is carried to the central nervous system (CNS) by the:

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
A

Correct Answer
verified

Correct Answer
verified
The sacral plexus forms from the anterio...
View Answer

Correct Answer
verified

Correct Answer
verified
The affected nerve if the tongue is bent...
View Answer

Correct Answer
verified
A

Correct Answer
verified
The cranial nerves that genera...
View Answer

Correct Answer
verified

Correct Answer
verified
The upper motor neurons stimulate the lo...
View Answer

Correct Answer
verified

Correct Answer
verified
The reflex arc begins with 1)the detecti...
View Answer

Correct Answer
verified