Question 1

If someone steps on a sharp object with their right foot, it will lead to

Accepted Answer

A)   polysynaptic reflexes involving contraction of the right hamstring and left quadriceps.
B)   polysynaptic reflexes involving contraction of the right quadriceps and left hamstrings.
C)   a monosynaptic reflex causing contraction of the right hamstring and a polysynaptic reflex causing contraction of the left hamstring.
D)   a monosynaptic reflex causing contraction of the right quadriceps and a polysynaptic reflex causing contraction of the the left hamstring.

Question 2

In general, nerves from the posterior division of the brachial plexus tend to innervate muscles that extend the parts of the upper limb.

Accepted Answer

A) True 
 B)False

Question 3

The innermost of the meninges is the pia mater.

Accepted Answer

A) True 
 B)False  True

Question 4

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 5

Anatomy of the spinal cord & spinal nerves. 
-This figure shows a cross section of the spinal cord. What structure does number 1 indicate?

Accepted Answer

A)   Lateral horn
B)   Anterior horn
C)   Gray commissure
D)   Posterior horn
E)   Posterior funiculus

Question 6

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.

Question 7

Anatomy of the spinal cord & spinal nerves. 
-This figure shows the spinal cord and spinal nerves. What structure does number 1 indicate?

Accepted Answer

A)   Dura mater
B)   Filum terminale
C)   Cauda equina
D)   Conus medullaris
E)   Posterior rootlets

Question 8

The spinal cord part with the largest diameter is the ________ part.

Accepted Answer

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

Question 9

This figure shows a cross section of a vertebra and the spinal cord. What structure does number 1 indicate?

Accepted Answer

A)   Epidural space
B)   Pia mater
C)   Subarachnoid space
D)   Central canal
E)   Dura mater

Question 10

Anatomy of the spinal cord & spinal nerves. 
-This figure shows the spinal cord and spinal nerves. What structure does number 2 indicate?

Accepted Answer

A)   Dura mater
B)   Filum terminale
C)   Cauda equina
D)   Conus medullaris
E)   Posterior rootlets D

Question 11

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 12

The nerve responsible for innervation (movement)  of the quadriceps femoris muscle is the ________ nerve.

Accepted Answer

A)   femoral
B)   sciatic
C)   obturator
D)   genitofemoral
E)   tibial

Question 13

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. C

Question 14

Following an injury to his arm, a patient complains that he has no sensations from his "pinky." You suspect that he has damaged the

Accepted Answer

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

Question 15

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

Question 16

A reflex arc in which both the receptor and the effector organs of the reflex are on the same side of the spinal cord is

Accepted Answer

A)   monosynaptic.
B)   polysynaptic.
C)   ipsilateral.
D)   contralateral.
E)   None of the choices is correct.

Question 17

The posterior 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.

Question 18

Anatomy of the spinal cord & spinal nerves. 
-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

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 20

The spinal cord relays both sensory and motor information between the CNS and rest of the body.

Accepted Answer

A) True 
 B)False

Exam 14: Nervous System: Spinal Cord and Spinal Nerves

If someone steps on a sharp object with their right foot, it will lead to

Correct AnswerverifiedShow Answer

In general, nerves from the posterior division of the brachial plexus tend to innervate muscles that extend the parts of the upper limb.

Correct AnswerverifiedShow Answer

The innermost of the meninges is the pia mater.

Correct AnswerverifiedTrue

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

Correct AnswerverifiedShow Answer

Anatomy of the spinal cord & spinal nerves. -This figure shows a cross section of the spinal cord. What structure does number 1 indicate?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Anatomy of the spinal cord & spinal nerves. -This figure shows the spinal cord and spinal nerves. What structure does number 1 indicate?

Correct AnswerverifiedShow Answer

The spinal cord part with the largest diameter is the ________ part.

Correct AnswerverifiedShow Answer

This figure shows a cross section of a vertebra and the spinal cord. What structure does number 1 indicate?

Correct AnswerverifiedShow Answer

Anatomy of the spinal cord & spinal nerves. -This figure shows the spinal cord and spinal nerves. What structure does number 2 indicate?

Correct AnswerverifiedD

The Golgi tendon reflex

Correct AnswerverifiedShow Answer

The nerve responsible for innervation (movement) of the quadriceps femoris muscle is the ________ nerve.

Correct AnswerverifiedShow Answer

Axons of the corticobulbar tracts

Correct AnswerverifiedC

Following an injury to his arm, a patient complains that he has no sensations from his "pinky." You suspect that he has damaged the

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

A reflex arc in which both the receptor and the effector organs of the reflex are on the same side of the spinal cord is

Correct AnswerverifiedShow Answer

The posterior ramus of a typical spinal nerve innervates the

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

The spinal cord relays both sensory and motor information between the CNS and rest of the body.

Correct AnswerverifiedShow Answer

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D

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C

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