Question 1

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

Question 2

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

Accepted Answer

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

Question 3

Stepping on a piece of glass would most likely invoke a _____ reflex.

Accepted Answer

A)  Golgi tendon
B)  withdrawal
C)  stretch
D)  pain
E)  motor

Question 4

What is the correct order for the parts of the spinal cord,from superior to inferior?

Accepted Answer

A)  Cervical - thoracic - sacral - coccygeal - lumbar
B)  Cervical - thoracic - lumbar - sacral - coccygeal
C)  Thoracic - lumbar - sacral - cervical - coccygeal
D)  Thoracic - cervical - lumbar - coccygeal - sacral
E)  Thoracic - lumbar - sacral - coccygeal - cervical

Question 5

What reflex flexes the toes when the inferior surface of the foot is stroked?

Accepted Answer

A)  Cremasteric reflex
B)  Patellar reflex
C)  Abdominal reflex
D)  Achilles reflex
E)  Plantar reflex

Question 6

In a lumbar puncture (spinal tap) ,fluid is extracted from the

Accepted Answer

A)  central canal of the spinal cord.
B)  epidural space.
C)  subdural space.
D)  epiphyseal space.
E)  subarachnoid space.

Question 7

In the brain,the outer cerebral cortex consists of gray matter,but in the spinal cord,gray matter is confined to the innermost regions.

Accepted Answer

A) True 
 B)False

Question 8

There is no delay between stimulus and response in a polysynaptic reflex.

Accepted Answer

A) True 
 B)False

Question 9

The simplest reflex is the _____ reflex.

Accepted Answer

A)  multisynaptic
B)  unilateral
C)  monosynaptic
D)  polysynaptic
E)  multilateral

Question 10

The plexus formed from the anterior rami of L4-S4 is the ________ plexus.

Accepted Answer

A)  intercostal
B)  cervical
C)  brachial
D)  lumbar
E)  sacral

Question 11

A spinal nerve contains

Accepted Answer

A)  motor axons only.
B)  sensory axons only.
C)  both motor axons and sensory axons.

Question 12

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

Accepted Answer

The answer of A ___________ is a specific segment of...

Question 13

-This figure shows the spinal cord and spinal nerves.What structure does number 3 indicate?

Accepted Answer

A)  Cervical plexus
B)  Brachial plexus
C)  Cervical enlargement
D)  Lumbosacral enlargement
E)  Sacral plexus

Question 14

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 15

-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 16

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.

Question 17

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 18

This structure contains unmyelinated axons and serves as a communication route between the right and left sides of the gray matter in the spinal cord.

Accepted Answer

A)  Gray commissure
B)  White commissure
C)  Lateral commissure
D)  Posterior commissure
E)  Denticulate ligaments

Question 19

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 20

The anterior rami of T1-T11 are called

Accepted Answer

A)  dorsal plexuses.
B)  anterior plexuses.
C)  intercostal nerves.
D)  branchial nerves.
E)  cervical nerves.

Exam 16: Spinal Cord and Spinal Nerves

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

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

Correct AnswerverifiedShow Answer

There is no delay between stimulus and response in a polysynaptic reflex.

Correct AnswerverifiedShow Answer

The posterior ramus of a typical spinal nerve innervates the

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

This structure contains unmyelinated axons and serves as a communication route between the right and left sides of the gray matter in the spinal cord.

Correct AnswerverifiedShow Answer

What reflex flexes the toes when the inferior surface of the foot is stroked?

Correct AnswerverifiedShow Answer

In a lumbar puncture (spinal tap) ,fluid is extracted from the

Correct AnswerverifiedShow Answer

A spinal nerve contains

Correct AnswerverifiedShow Answer

The plexus formed from the anterior rami of L4-S4 is the ________ plexus.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

In the brain,the outer cerebral cortex consists of gray matter,but in the spinal cord,gray matter is confined to the innermost regions.

Correct AnswerverifiedShow Answer

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.

Correct AnswerverifiedShow Answer

-This figure shows the spinal cord and spinal nerves.What structure does number 3 indicate?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

The simplest reflex is the _____ reflex.

Correct AnswerverifiedShow Answer

Stepping on a piece of glass would most likely invoke a _____ reflex.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

What is the correct order for the parts of the spinal cord,from superior to inferior?

Correct AnswerverifiedShow Answer

The anterior rami of T1-T11 are called

Correct AnswerverifiedShow Answer

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