Question 1

Normal infants will show the Babinski reflex up to the age of _____ years.

Accepted Answer

A)   1
B)   2
C)   2.
D)   3E) A) and B)
F) A) and C)

Question 2

There are 31 pairs of spinal nerves, all of which consist of both motor and sensory fibers.

Accepted Answer

A) True 
 B)False

Question 3

It would be normal to find a functioning Babinski reflex in an infant as young as 4 months old.

Accepted Answer

A) True 
 B)False

Question 4

Efferent neurons carry information away from the CNS; afferent neurons carry information toward the CNS.

Accepted Answer

A) True 
 B)False

Question 5

Most "motor" cranial nerves carry proprioceptive sensory fibers.

Accepted Answer

A) True 
 B)False

Question 6

The peripheral nervous system consists of 43 pairs of nerves and their branches.

Accepted Answer

A) True 
 B)False

Question 7

The axons of the olfactory nerve form about 20 small bundles that pierce the cribriform plate to enter the brain.

Accepted Answer

A) True 
 B)False

Question 8

By age 2 years in a normal infant, the stimulus that once caused the Babinski reflex now causes:

Accepted Answer

A)   the knee jerk reflex.
B)   the ankle jerk reflex.
C)   the plantar reflex.
D)   no reaction at all.E) None of the above
F) B) and D)

Question 9

When responding to stimulation of the outer margin of the sole of the foot, a 1-year-old infant extends her great toe without fanning of the other toes. This happens because:

Accepted Answer

A)   the corticospinal fibers have become fully myelinated and the Babinski reflex becomes suppressed.
B)   the corticospinal fibers have not yet become fully myelinated and the Babinski reflex is activated.
C)   the sensory fibers in the ophthalmic branch of the fifth cranial nerve are mediated by reflex arcs.
D)   a deep reflex is mediated by a two-neuron spinal arc.E) B) and C)
F) A) and C)

Question 10

The accessory nerve is unique among the cranial nerves, because none of its fibers originate in the brain.

Accepted Answer

A) True 
 B)False

Question 11

Which part of the vertebral column has one more pair of nerves coming from it than it has vertebrae?

Accepted Answer

A)   Cervical
B)   Thoracic
C)   Lumbar
D)   Both B and CE) A) and C)
F) All of the above

Question 12

If a reflex causes cardiac muscle to contract, it can be either a somatic or an autonomic reflex.

Accepted Answer

A) True 
 B)False

Question 13

Match each cranial nerve with its function or description.
-Supplies muscles of the tongue; name means "under the tongue"

Accepted Answer

A)  Olfactory nerve
B)  Optic nerve
C)  Oculomotor nerve
D)  Trochlear nerve
E)  Trigeminal nerveF) Abducens nerveG) Vestibulocochlear nerveH) Glossopharyngeal nerveI) Vagus nerveJ) Hypoglossal nerveK) A) and H)
L) A) and B)

Question 14

Describe the basic principles of somatic motor pathways.

Accepted Answer

The basic principles of somatic motor pa...

Question 15

Which of the following is a correct statement?

Accepted Answer

A)   There are 7 cervical nerve pairs.
B)   There are 11 thoracic nerve pairs.
C)   There are 5 lumbar nerve pairs.
D)   All of the above are correct statements.E) A) and D)
F) A) and C)

Question 16

Match each term with its description or definition.
-Plexus from which femoral nerve emerges

Accepted Answer

A)  Cauda equina
B)  Ventral nerve root
C)  Dorsal nerve root
D)  Cervical plexus
E)  Brachial plexusF) Lumbar plexusG) DermatomeH) MyotomeI) Somatic reflexesJ) Autonomic reflexesK) A) and I)
L) E) and G)

Question 17

Which is not true of the ventral nerve root?

Accepted Answer

A)   It is also called the anterior root.
B)   It contains the spinal ganglion.
C)   It includes motor neurons.
D)   All of the above are true.E) A) and B)
F) A) and C)

Question 18

The phrenic nerve is found in the _____ plexus.

Accepted Answer

A)   cervical
B)   brachial
C)   lumbar
D)   sacralE) B) and C)
F) A) and C)

Question 19

Which of the following is not a plexus of the spinal nerves?

Accepted Answer

A)   Cervical
B)   Brachial
C)   Lumbar
D)   ThoracicE) A) and B)
F) All of the above

Question 20

There is almost no overlap in the dermatomes of the body.

Accepted Answer

A) True 
 B)False

Exam 21: Peripheral Nervous System

Normal infants will show the Babinski reflex up to the age of _____ years.

Correct AnswerverifiedShow Answer

Which is not true of the ventral nerve root?

Correct AnswerverifiedShow Answer

Which of the following is a correct statement?

Correct AnswerverifiedShow Answer

Match each term with its description or definition. -Plexus from which femoral nerve emerges

Correct AnswerverifiedShow Answer

The peripheral nervous system consists of 43 pairs of nerves and their branches.

Correct AnswerverifiedShow Answer

There are 31 pairs of spinal nerves, all of which consist of both motor and sensory fibers.

Correct AnswerverifiedShow Answer

Match each cranial nerve with its function or description. -Supplies muscles of the tongue; name means "under the tongue"

Correct AnswerverifiedShow Answer

There is almost no overlap in the dermatomes of the body.

Correct AnswerverifiedShow Answer

Efferent neurons carry information away from the CNS; afferent neurons carry information toward the CNS.

Correct AnswerverifiedShow Answer

The axons of the olfactory nerve form about 20 small bundles that pierce the cribriform plate to enter the brain.

Correct AnswerverifiedShow Answer

The accessory nerve is unique among the cranial nerves, because none of its fibers originate in the brain.

Correct AnswerverifiedShow Answer

It would be normal to find a functioning Babinski reflex in an infant as young as 4 months old.

Correct AnswerverifiedShow Answer

Describe the basic principles of somatic motor pathways.

Correct AnswerAnswered by ExamLex AIThe basic principles of somatic motor pa...View AnswerShow Answer

The phrenic nerve is found in the _____ plexus.

Correct AnswerverifiedShow Answer

When responding to stimulation of the outer margin of the sole of the foot, a 1-year-old infant extends her great toe without fanning of the other toes. This happens because:

Correct AnswerverifiedShow Answer

By age 2 years in a normal infant, the stimulus that once caused the Babinski reflex now causes:

Correct AnswerverifiedShow Answer

Which part of the vertebral column has one more pair of nerves coming from it than it has vertebrae?

Correct AnswerverifiedShow Answer

If a reflex causes cardiac muscle to contract, it can be either a somatic or an autonomic reflex.

Correct AnswerverifiedShow Answer

Most "motor" cranial nerves carry proprioceptive sensory fibers.

Correct AnswerverifiedShow Answer

Which of the following is not a plexus of the spinal nerves?

Correct AnswerverifiedShow Answer

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The basic principles of somatic motor pa...
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