Question 1

Within the axilla,axons of neurons are organized within

Accepted Answer

A)  three cords-the posterior,medial,and lateral cords.
B)  three divisions-the superior,middle,and inferior divisions.
C)  five cords-the superior,inferior,medial,lateral,and middle divisions.
D)  five divisions-proximal,distal,ulnar,median,and radial divisions.

Question 2

The largest and longest nerve in the body is the _________ nerve.

Accepted Answer

A)  femoral
B)  radial
C)  sciatic
D)  obturator
E)  saphenous

Question 3

What is the thin strand of pia mater that helps to anchor the spinal cord to the coccyx

Accepted Answer

A)  Conus medullaris
B)  Cervical enlargement
C)  Terminus coccyx
D)  Filum terminale
E)  Coccygeal tendon

Question 4

The obturator nerve innervates muscles of the lateral thigh.

Accepted Answer

A) True 
 B)False

Question 5

The posterior horns of the spinal cord contain

Accepted Answer

A)  axons of motor neurons and cell bodies of interneurons.
B)  axons of sensory and motor neurons.
C)  axons of interneurons.
D)  axons of sensory neurons and cell bodies of interneurons.
E)  autonomic motor neurons.

Question 6

A typical spinal cord in an adult is

Accepted Answer

A)  24-26 inches long.
B)  12-14 inches long.
C)  8-10 inches long.
D)  16-18 inches long.
E)  20-24 inches long.

Question 7

-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 correct

Question 8

Which are not spinal nerve branches

Accepted Answer

A)  Rami communicantes
B)  Posterior rami
C)  Anterior rami
D)  Lateral rami

Question 9

Neurons in the primary somatosensory cortex receive input from tertiary neurons that have their cell bodies residing in the thalamus.

Accepted Answer

A) True 
 B)False

Question 10

Which accurately describes sensory and motor pathways

Accepted Answer

A)  Sensory pathways terminate in the brain,and motor pathways terminate at effectors.
B)  Both sensory and motor pathways terminate in the brain.
C)  Both sensory and motor pathways terminate in the PNS.
D)  Sensory pathways terminate at effectors and motor pathways terminate in the brain.

Question 11

Two of the nerves of the lumbar plexus are the

Accepted Answer

A)  femoral and sciatic nerves.
B)  femoral and obturator nerves.
C)  obturator and pudendal nerves.
D)  pudendal and sciatic nerves.

Question 12

For many reflexes,including the stretch reflex,the excitation of a muscle leads to

Accepted Answer

A)  excitation of all motorneurons that are contralateral.
B)  inhibition of motor neurons of its antagonist.
C)  inhibition of motor neurons of its synergist.
D)  excitation of motor neurons of the antagonist.
E)  inhibition of sensory neurons that initiate the reflex.

Question 13

A specific segment of skin supplied by a single spinal nerve is a ___________.

Accepted Answer

The answer of A specific segment of skin supplied by...

Question 14

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 pia...

Question 15

The Golgi tendon reflex

Accepted Answer

A)  helps to overcome pain.
B)  aids in sending sensory information to the muscles.
C)  prevents skeletal muscles from tensing excessively.
D)  prevents muscles from contracting.
E)  helps to gain balance through a complex series of muscular contractions.

Question 16

-This figure shows a cross section of the spinal cord.What structure does number 3 indicate

Accepted Answer

A)  Posterior funiculus
B)  White commissure
C)  Anterior funiculus
D)  Lateral funiculus
E)  Anterior median fissure

Question 17

-This figure shows an anterior view of the spinal cord and meninges.What structure does number 7 indicate

Accepted Answer

A)  Arachnoid
B)  Pia mater
C)  Dura mater
D)  Gray matter
E)  White matter

Question 18

-This figure shows a cross section of the spinal cord.What structure does number 4 indicate

Accepted Answer

A)  Posterior median sulcus
B)  White commissure
C)  Anterior funiculus
D)  Lateral funiculus
E)  Anterior median fissure

Question 19

The spinocerebellar pathway is an ascending somatosensory pathway.

Accepted Answer

A) True 
 B)False

Question 20

Following an injury to his arm,a patient complains that he has lost the ability to flex his elbow and supinate his forearm.Which nerve do you suspect he has damaged

Accepted Answer

A)  Median nerve
B)  Radial nerve
C)  Musculocutaneous nerve
D)  Ulnar nerve
E)  Axillary nerve

Exam 14: Nervous System: Spinal Cord and Spinal Nerves

-This figure shows an anterior view of the spinal cord and meninges.What structure does number 7 indicate

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-This figure shows a cross section of the spinal cord.What structure does number 4 indicate

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-This figure shows neuron pathways and nuclei locations.What type of nuclei does number 1 indicate

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

-This figure shows a cross section of the spinal cord.What structure does number 3 indicate

Correct AnswerverifiedShow Answer

A typical spinal cord in an adult is

Correct AnswerverifiedShow Answer

The spinocerebellar pathway is an ascending somatosensory pathway.

Correct AnswerverifiedShow Answer

The largest and longest nerve in the body is the _________ nerve.

Correct AnswerverifiedShow Answer

The obturator nerve innervates muscles of the lateral thigh.

Correct AnswerverifiedShow Answer

Following an injury to his arm,a patient complains that he has lost the ability to flex his elbow and supinate his forearm.Which nerve do you suspect he has damaged

Correct AnswerverifiedShow Answer

For many reflexes,including the stretch reflex,the excitation of a muscle leads to

Correct AnswerverifiedShow Answer

Two of the nerves of the lumbar plexus are the

Correct AnswerverifiedShow Answer

A specific segment of skin supplied by a single spinal nerve is a ___________.

Correct AnswerverifiedShow Answer

Which are not spinal nerve branches

Correct AnswerverifiedShow Answer

Within the axilla,axons of neurons are organized within

Correct AnswerverifiedShow Answer

Which accurately describes sensory and motor pathways

Correct AnswerverifiedShow Answer

What is the thin strand of pia mater that helps to anchor the spinal cord to the coccyx

Correct AnswerverifiedShow Answer

The Golgi tendon reflex

Correct AnswerverifiedShow Answer

Neurons in the primary somatosensory cortex receive input from tertiary neurons that have their cell bodies residing in the thalamus.

Correct AnswerverifiedShow Answer

The posterior horns of the spinal cord contain

Correct AnswerverifiedShow Answer

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