Question 1

Motor commands are carried by __________ from the brain along the spinal cord.

Accepted Answer

A)   both anterior and posterior roots
B)   ascending tracts
C)   spinal nerves
D)   cranial nerves
E)   descending tracts

Question 2

The spinal cord is vitally important in processing complex information.

Accepted Answer

A) True 
 B)False

Question 3

The signals that control your handwriting travel down the spinal cord in the _________ tracts.

Accepted Answer

A)   tectospinal
B)   corticospinal
C)   lateral vestibulospinal
D)   medial vestibulospinal
E)   spinocerebellar

Question 4

Which of the following groups of muscles has the most muscle spindles?

Accepted Answer

A)   Muscles of the hand
B)   Muscles of the back
C)   Muscles of the thigh
D)   Muscles of the middle-ear
E)   Muscles of the torso

Question 5

Cerebrospinal fluid fills the space between the __________.

Accepted Answer

A)   dural sheath and dura mater
B)   dural sheath and vertebral bones
C)   dura mater and arachnoid mater
D)   arachnoid mater and pia mater
E)   dura mater and pia mater

Question 6

Most nerves are motor nerves.

Accepted Answer

A) True 
 B)False

Question 7

Epidural anesthesia is introduced to the epidural space between the __________ to block pain signals during pregnancy.

Accepted Answer

A)   dural sheath and dura mater
B)   dural sheath and vertebral bones
C)   dura mater and arachnoid mater
D)   arachnoid mater and pia mater
E)   dura mater and pia mater

Question 8

Which of the following is not considered a region of the spinal cord?

Accepted Answer

A)   Cervical
B)   Thoracic
C)   Lumbar
D)   Pelvic
E)   Sacral

Question 9

Eyes and ears are innervated by _________ fibers.

Accepted Answer

A)   white
B)   visceral
C)   somatic
D)   special
E)   general

Question 10

Many upper motor neurons synapse with lower motor neurons in the ___________.

Accepted Answer

A)   posterior horn
B)   anterior horn
C)   posterior column
D)   anterior column
E)   posterior root ganglion

Question 11

Ascending signals in the spinal cord travel via gray matter,while descending signals travel via white matter.

Accepted Answer

A) True 
 B)False

Question 12

A typical reflex contains a sensory neuron attached directly to an effector.

Accepted Answer

A) True 
 B)False

Question 13

The bundle of nerve roots that occupy the vertebral canal from L2 to S5 is called the __________.

Accepted Answer

A)   medullary cone
B)   cauda equina
C)   lumbar enlargement
D)   cervical enlargement
E)   spinal cord

Question 14

The anterior rami of the spinal nerves form nerve plexuses in all regions except the _________ region.

Accepted Answer

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

Question 15

The tendon reflex is the inhibition of a muscle's contraction that occurs when its tendon is excessively stretched.

Accepted Answer

A) True 
 B)False

Question 16

Reflex arcs that only use two neurons are called ____________ reflex arcs.

Accepted Answer

A)   ipsilateral
B)   contralateral
C)   polysynaptic
D)   monosynaptic
E)   autonomic

Question 17

Which one of the following best describes the order of a somatic reflex?

Accepted Answer

A)   Somatic receptor → interneuron → afferent nerve fiber → efferent nerve fiber → skeletal muscle
B)   Somatic receptor → efferent nerve fiber → interneuron → afferent nerve fiber → skeletal muscle
C)   Somatic receptor → afferent nerve fiber → interneuron → efferent nerve fiber → skeletal muscle
D)   Somatic receptor → efferent nerve fiber → afferent nerve fiber → interneuron → skeletal muscle
E)   Somatic receptor → afferent nerve fiber → interneuron → efferent nerve fiber → smooth muscle

Question 18

You go to the movies after a long day and you begin to nod off as soon as the movie starts.Your head starts to lower a little,but a reflex causes your head to rise.This is called the __________ reflex.

Accepted Answer

A)   tendon
B)   crossed extension
C)   withdrawal
D)   stretch (myotatic) 
E)   flexor (withdrawal)

Question 19

Which of the following structures is the richest in lipid content?

Accepted Answer

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

Question 20

Tendon organs are __________.

Accepted Answer

A)   chemoreceptors
B)   visceral receptors
C)   proprioceptors
D)   pain receptors
E)   nociceptors

Exam 13: The Spinal Cord,spinal Nerves,and Somatic Reflexes

Ascending signals in the spinal cord travel via gray matter,while descending signals travel via white matter.

Correct AnswerverifiedShow Answer

The anterior rami of the spinal nerves form nerve plexuses in all regions except the _________ region.

Correct AnswerverifiedShow Answer

You go to the movies after a long day and you begin to nod off as soon as the movie starts.Your head starts to lower a little,but a reflex causes your head to rise.This is called the __________ reflex.

Correct AnswerverifiedShow Answer

Epidural anesthesia is introduced to the epidural space between the __________ to block pain signals during pregnancy.

Correct AnswerverifiedShow Answer

Many upper motor neurons synapse with lower motor neurons in the ___________.

Correct AnswerverifiedShow Answer

A typical reflex contains a sensory neuron attached directly to an effector.

Correct AnswerverifiedShow Answer

The spinal cord is vitally important in processing complex information.

Correct AnswerverifiedShow Answer

Most nerves are motor nerves.

Correct AnswerverifiedShow Answer

Which one of the following best describes the order of a somatic reflex?

Correct AnswerverifiedShow Answer

Which of the following structures is the richest in lipid content?

Correct AnswerverifiedShow Answer

The tendon reflex is the inhibition of a muscle's contraction that occurs when its tendon is excessively stretched.

Correct AnswerverifiedShow Answer

Cerebrospinal fluid fills the space between the __________.

Correct AnswerverifiedShow Answer

Reflex arcs that only use two neurons are called ____________ reflex arcs.

Correct AnswerverifiedShow Answer

The bundle of nerve roots that occupy the vertebral canal from L2 to S5 is called the __________.

Correct AnswerverifiedShow Answer

Motor commands are carried by __________ from the brain along the spinal cord.

Correct AnswerverifiedShow Answer

Eyes and ears are innervated by _________ fibers.

Correct AnswerverifiedShow Answer

The signals that control your handwriting travel down the spinal cord in the _________ tracts.

Correct AnswerverifiedShow Answer

Which of the following groups of muscles has the most muscle spindles?

Correct AnswerverifiedShow Answer

Which of the following is not considered a region of the spinal cord?

Correct AnswerverifiedShow Answer

Tendon organs are __________.

Correct AnswerverifiedShow Answer

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