Question 1

Which of the following branches of a spinal nerve has the somas of only sensory neurons?

Accepted Answer

A)  Posterior (dorsal)  root
B)  Anterior (ventral)  root
C)  Posterior ramus
D)  Anterior ramus
E)  Meningeal branchF) B) and C)
G) None of the above

Question 2

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 tractsF) A) and D)
G) B) and C)

Question 3

Tendon organs are __________.

Accepted Answer

A)  chemoreceptors
B)  visceral receptors
C)  proprioceptors
D)  pain receptors
E)  nociceptorsF) A) and E)
G) A) and D)

Question 4

Which of the following is not a distal branch of the spinal nerve?

Accepted Answer

A)  Anterior ramus
B)  Posterior ramus
C)  Posterior root
D)  Meningeal branch
E)  Communicating ramiF) B) and D)
G) A) and E)

Question 5

Nerve fibers in a given white matter tract are similar in origin,destination,and function.

Accepted Answer

A) True 
 B)False

Question 6

Each portion of the spinal cord,from which a spinal nerve emerges,is called a "segment" of the cord.

Accepted Answer

A) True 
 B)False

Question 7

Eyes and ears are innervated by _________ fibers.

Accepted Answer

A)  white
B)  visceral
C)  somatic
D)  special
E)  generalF) C) and D)
G) A) and D)

Question 8

Which of the following is not a property of reflexes?

Accepted Answer

A)  Reflex responses are very predictable.
B)  Reflexes are responses to sensory inputs.
C)  Reflexes are quick responses of the nervous system.
D)  Reflexes are not voluntary.
E)  Reflexes do not require a stimulus.F) A) and D)
G) C) and D) E

Question 9

Which of the following is an ascending tract of the spinal cord?

Accepted Answer

A)  Lateral tectospinal tract
B)  Medial reticulospinal tract
C)  Ventral corticospinal tract
D)  Vestibulospinal tract
E)  Gracile fasciculusF) A) and E)
G) C) and E) E

Question 10

The connective tissue that surrounds a fascicle is called the __________.

Accepted Answer

A)  myelin
B)  perimysium
C)  epineurium
D)  endoneurium
E)  perineuriumF) None of the above
G) D) and E)

Question 11

Nerve fibers are insulated from one another by __________.

Accepted Answer

A)  perineurium
B)  endoneurium
C)  fascicles
D)  epineurium
E)  blood vesselsF) C) and E)
G) B) and E)

Question 12

A nurse pricks your finger to type your blood.You flinch at the pain,pulling your hand back.This is called the __________ reflex.

Accepted Answer

A)  painful
B)  stretch
C)  flexor (withdrawal) 
D)  tendon
E)  crossed extensionF) B) and E)
G) A) and E)

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 cordF) C) and D)
G) All of the above

Question 14

Somatic reflexes are responses of skeletal,smooth,and cardiac muscles.

Accepted Answer

A) True 
 B)False

Question 15

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 materF) A) and B)
G) A) and C)

Question 16

In the patellar tendon reflex arc,the patellar ligament is stretched,which stretches the quadriceps femoris muscle of the thigh.This reflex will cause the quadriceps femoris to __________ and the hamstrings to __________.

Accepted Answer

A)  contract; relax
B)  contract; contract
C)  relax; contract
D)  relax; relaxE) None of the above
F) C) and D)

Question 17

Which reflex shows the least synaptic delay?

Accepted Answer

A)  A polysynaptic reflex
B)  The cross extension reflex
C)  The withdrawal reflex
D)  The flexor reflex
E)  The tendon reflexF) None of the above
G) B) and C) E

Question 18

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

Accepted Answer

A)  Cervical
B)  Thoracic
C)  Lumbar
D)  Pelvic
E)  SacralF) A) and B)
G) D) and E)

Question 19

The middle layer of the meninges is called the __________.

Accepted Answer

A)  gray matter
B)  white matter
C)  dura mater
D)  arachnoid mater
E)  pia materF) D) and E)
G) All of the above

Question 20

"Somatosensory" does not refer to sensory signals from __________.

Accepted Answer

A)  bones and muscles
B)  joints
C)  proprioceptors
D)  the viscera
E)  the skinF) A) and B)
G) None of the above

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

Which of the following branches of a spinal nerve has the somas of only sensory neurons?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Tendon organs are __________.

Correct AnswerverifiedShow Answer

Which of the following is not a distal branch of the spinal nerve?

Correct AnswerverifiedShow Answer

Nerve fibers in a given white matter tract are similar in origin,destination,and function.

Correct AnswerverifiedShow Answer

Each portion of the spinal cord,from which a spinal nerve emerges,is called a "segment" of the cord.

Correct AnswerverifiedShow Answer

Eyes and ears are innervated by _________ fibers.

Correct AnswerverifiedShow Answer

Which of the following is not a property of reflexes?

Correct AnswerverifiedE

Which of the following is an ascending tract of the spinal cord?

Correct AnswerverifiedE

The connective tissue that surrounds a fascicle is called the __________.

Correct AnswerverifiedShow Answer

Nerve fibers are insulated from one another by __________.

Correct AnswerverifiedShow Answer

A nurse pricks your finger to type your blood.You flinch at the pain,pulling your hand back.This is called the __________ reflex.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Somatic reflexes are responses of skeletal,smooth,and cardiac muscles.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

In the patellar tendon reflex arc,the patellar ligament is stretched,which stretches the quadriceps femoris muscle of the thigh.This reflex will cause the quadriceps femoris to __________ and the hamstrings to __________.

Correct AnswerverifiedShow Answer

Which reflex shows the least synaptic delay?

Correct AnswerverifiedE

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

Correct AnswerverifiedShow Answer

The middle layer of the meninges is called the __________.

Correct AnswerverifiedShow Answer

"Somatosensory" does not refer to sensory signals from __________.

Correct AnswerverifiedShow Answer

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E

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E

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In the patellar tendon reflex arc,the patellar ligament is stretched,which stretches the quadriceps femoris muscle of the thigh.This reflex will cause the quadriceps femoris to and the hamstrings to .

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E

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