Deck 14: The Nervous System: the Spinal Cord and Spinal Nerves

Question 1

Figure 14.1
Use the diagram above to answer the following questions.
Which letter indicates a lamellar corpuscle (Pacinian corpuscle) that rapidly adapts to deep pressure stimuli?

A) A
B) B
C) C
D) D
E) E

Answer 1

D

Question 2

Figure 14.2
Use the diagram above to answer the following questions.
Which letter indicates the cranial nerve that has three major branches?

A) A
B) B
C) C
D) D
E) E

Answer 2

C

Question 3

Figure 14.2
Use the diagram above to answer the following questions.
Which cranial nerve pair is characterized by somatic sensory fibers crossing at the ventral midline of the brain?

A) I
B) II
C) IV
D) V
E) VIII

Answer 3

B

Question 4

Figure 14.2
Use the diagram above to answer the following questions.
Which cranial nerve pair, similar to cranial nerve II, runs through a canal that bears the same name?

A) IV
B) V
C) VIII
D) XI
E) XII

Question 5

Figure 14.2
Use the diagram above to answer the following questions.
The spinal root of which cranial nerve pair innervates the sternocleidomastoid and trapezius muscles?

A) IV
B) V
C) VIII
D) XI
E) XII

Question 6

Figure 14.2
Use the diagram above to answer the following questions.
Which letter indicates the structure where cranial nerve fibers from the retina cross to the opposite side of the brain?

A) A
B) B
C) C
D) D
E) E

Question 7

Figure 14.1
Use the diagram above to answer the following questions.
Which letter indicates receptors that respond chiefly to pain and temperature?

A) A
B) B
C) C
D) D
E) E

Question 8

Figure 14.1
Use the diagram above to answer the following questions.
Which letter indicates epithelial tactile complexes (Merkel discs), light pressure receptors found in the epidermis?

A) A
B) B
C) C
D) D
E) E

Question 9

Figure 14.2
Use the diagram above to answer the following questions.
Which cranial nerve, along with the abducens and oculomotor nerves, has somatic motor fibers that pass through the superior orbital fissure?

A) I
B) II
C) IV
D) VII
E) VIII

Question 10

Figure 14.2
Use the diagram above to answer the following questions.
Which cranial nerve, along with cranial nerve pair II, relays specific somatic sensory impulses?

A) I
B) II
C) IV
D) V
E) VIII

Question 11

Figure 14.2
Use the diagram above to answer the following questions.
Which letter indicates the cranial nerve with nerve fibers that pass through the hypoglossal canal?

A) A
B) B
C) C
D) D
E) E

Question 12

Figure 14.2
Use the diagram above to answer the following questions.
Which letter indicates the cranial nerve that transmits olfactory impulses?

A) A
B) B
C) C
D) D
E) E

Question 13

Figure 14.2
Use the diagram above to answer the following questions.
Of the cranial nerve pairs listed below, which nerve, along with XI and XII, relays only somatic motor impulses?

A) I
B) II
C) IV
D) V
E) VIII

Question 14

Figure 14.2
Use the diagram above to answer the following questions.
Damage to which cranial nerve pair can cause difficulties in speech and swallowing?

A) IV
B) V
C) VIII
D) XI
E) XII

Question 15

Figure 14.1
Use the diagram above to answer the following questions.
Which letter indicates a bulbous corpuscle (Ruffini ending) that slowly adapts to deep pressure stimuli?

A) A
B) B
C) C
D) D
E) E

Question 16

Figure 14.2
Use the diagram above to answer the following questions.
Which cranial nerve pair has two sensory branches which both pass through the internal acoustic meatus?

A) I
B) II
C) IV
D) V
E) VIII

Question 17

Figure 14.2
Use the diagram above to answer the following questions.
Damage to which cranial nerve pair can cause deafness and problems with equilibrium?

A) IV
B) V
C) VIII
D) XI
E) XII

Question 18

Figure 14.2
Use the diagram above to answer the following questions.
Which cranial nerve pair, along with cranial nerve III, has fibers that pass through the superior orbital fissure?

A) I
B) II
C) IV
D) VII
E) VIII

Question 19

Figure 14.2
Use the diagram above to answer the following questions.
Which letter indicates the cranial nerve that has motor fibers that innervate muscles of facial expression?

A) A
B) B
C) C
D) D
E) E

Question 20

Figure 14.1
Use the diagram above to answer the following questions.
Which letter indicates a tactile corpuscle (Meissnerʹs corpuscle) that is responsive to light pressure?

A) A
B) B
C) C
D) D
E) E

Question 21

A lesion to the common fibular nerve causes

A) paralysis of the peroneal muscles.
B) footdrop.
C) the same deficit as a ruptured calcaneal tendon causes.
D) hammer toe.

Question 22

Anesthetic injection to which nerve may block pain during childbirth?

A) femoral
B) pudendal
C) obturator
D) sciatic

Question 23

An example of an encapsulated receptor is

A) a lamellar corpuscle (Pacinian corpuscle).
B) a tendon organ.
C) a hair follicle receptor.
D) a tactile epithelial cell (Merkel disc).

Question 24

Figure 14.2
Use the diagram above to answer the following questions.
Sensory fibers of which cranial nerve pair pass through the cribriform plate of the ethmoid bone?

A) I
B) II
C) IV
D) V
E) VIII

Question 25

Figure 14.2
Use the diagram above to answer the following questions.
Which of the cranial nerve listed below is the largest in diameter?

A) IV
B) V
C) VIII
D) XI
E) XII

Question 26

Figure 14.2
Use the diagram above to answer the following questions.
Which cranial nerve pair has three major branches, the maxillary, mandibular, and ophthalmic divisions?

A) IV
B) V
C) VIII
D) XI
E) XII

Question 27

The tibial and common fibular nerves branch from the nerve.

A) sciatic
B) axillary
C) femoral
D) pudendal

Question 28

The major nerve plexus to the upper limbs is the

A) sacral plexus.
B) brachial plexus.
C) lumbar plexus.
D) cervical plexus.

Question 29

A receptor that monitors stretch of the stomach can be classified as a

A) baroreceptor and proprioceptor.
B) mechanoreceptor and proprioceptor.
C) mechanoreceptor and interoceptor.
D) nociceptor and exteroceptor.

Question 30

Figure 14.2
Use the diagram above to answer the following questions.
Damage to which cranial nerve pair may result in anosmia?

A) I
B) II
C) IV
D) V
E) VIII

Question 31

Of the following, the nerve that forms from fibers of both the medial and lateral cords of the brachial plexus is the

A) ulnar.
B) axillary.
C) median.
D) musculocutaneous.

Question 32

Contraction rate of the diaphragm is controlled by which nerve?

A) trochlear
B) vagus
C) trigeminal
D) phrenic

Question 33

Sensory impulses from the skin would be transmitted into the spinal cord on the

A) dorsal root of spinal nerves.
B) sympathetic nerve pathway.
C) ventral root of spinal nerves.
D) pathway of parasympathetic neurons.

Question 34

If one likens a spinal nerve to the trunk of a tree, then the two roots of this tree are the dorsal and ventral roots. What would represent the two large branches of this tree?

A) dorsal and ventral root ganglia
B) ventral and dorsal rami
C) the brachial plexus
D) rami communicantes

Question 35

Which of the cranial nerves listed below provides innervation to one of the extrinsic eye muscles?

A) trochlear
B) trigeminal
C) optic
D) facial

Question 36

Which spinal nerve relays motor impulses to most of the muscles of the posterior forearm?

A) ulnar
B) radial
C) axillary
D) median

Question 37

Figure 14.2
Use the diagram above to answer the following questions.
Which cranial nerve pair along with the vagus and glossopharyngeal nerves, exits through the jugular foramen?

A) IV
B) V
C) VIII
D) XI
E) XII

Question 38

A pudendal nerve block may be given

A) to treat pain from sciatica.
B) in surgery to relax the muscles that cover the fibula.
C) in surgery to halt breathing temporarily.
D) to a woman giving birth.

Question 39

A receptor that monitors stretch of the patellar tendon can be classified as a

A) nociceptor and exteroceptor.
B) baroreceptor and proprioceptor.
C) mechanoreceptor and interoceptor.
D) mechanoreceptor and proprioceptor.

Question 40

Extrafusal muscle fibers that surround a muscle spindle and resist excessive muscle stretching are innervated by

A) α efferent neurons.
B) secondary sensory endings.
C) primary sensory endings.
D) γ efferent neurons.

Question 41

Which of these cranial nerve pairs do not pass through the superior orbital fissures?

A) optic
B) trochlear
C) abducens
D) oculomotor

Question 42

The cranial nerves that have neural connections with the tongue include all of the following except the

A) glossopharyngeal.
B) trigeminal.
C) accessory.
D) facial.

Question 43

What is the only cranial nerve that has fibers that enter and leave the skull through different foramen? (Hint: It enters through the foramen magnum and leaves through the jugular foramen.)

A) I
B) VI
C) XII
D) XI

Question 44

The abducens nerve (CN VI)

A) exits from the medulla.
B) innervates the lateral rectus muscle of the eye.
C) relays sensory information from the taste buds on the tongue.
D) if paralyzed, results in Bellʹs palsy.

Question 45

Which of these nerves does not arise primarily from the brachial plexus?

A) radial
B) median
C) ulnar
D) phrenic

Question 46

Which of the following regions is not innervated by nerves of the sacral plexus (L 4 - S4)?

A) anterior thigh muscles
B) posterior thigh
C) external genitalia
D) foot

Question 47

Which cranial nerves have fibers that relay somatic motor impulses to pharyngeal muscles during swallowing?

A) IX and X
B) I and II
C) VI and VII
D) V and XII

Question 48

Spinal nerves found at the level of L4 to about S4 form the

A) lumbar plexus.
B) sacral plexus.
C) thoracic plexus.
D) femoral plexus.

Question 49

The primary nerve to muscles of the anterior thigh is the

A) sural.
B) obturator.
C) femoral.
D) sciatic.

Question 50

Which of these foramen does not include a branch of the trigeminal nerve?

A) mandibular
B) ovale
C) spinosum
D) rotundum

Question 51

Which of these receptors would not be found within a synovial joint capsule?

A) free nerve endings
B) bulbous corpuscles (Ruffini endings)
C) lamellar corpuscles (Pacinian corpuscles)
D) tactile corpuscles (Meissnerʹs corpuscles)

Question 52

Mixed cranial nerves containing both motor and sensory fibers include all of the following except the

A) facial.
B) vagus.
C) optic.
D) trigeminal.

Question 53

Spinal nerves are

A) purely sensory nerves.
B) present in 31 pairs.
C) located exclusively in the vertebral canal.
D) present only in the thoracic region where plexuses are absent.

Question 54

What specific dermatome lies at the level of the navel?

A) S4
B) C2
C) T1
D) T10

Question 55

The gastrocnemius muscle is innervated by the nerve.

A) femoral
B) common peroneal
C) obturator
D) tibial

Question 56

An injury to the ulnar nerve causes

A) wrist drop.
B) the ʺhand of benediction.ʺ
C) claw hand.
D) inability to oppose the thumb.

Question 57

The trigeminal nerve contains which class(es) of nerve fibers?

A) somatic sensory only
B) somatic motor and general somatic sensory
C) somatic motor only
D) somatic sensory, visceral sensory, and visceral motor

Question 58

A person who cannot blink or smile could have damage to which cranial nerve?

A) III
B) V
C) I
D) VII

Question 59

Which of the cranial nerves listed below is a special somatic sensory nerve?

A) trochlear
B) facial
C) accessory
D) vestibulocochlear

Question 60

To avoid double vision, which of the following groups of cranial nerves must be functioning correctly?

A) VII, VIII, and XII
B) V, XI, and XII
C) I, IX, and X
D) III, IV, and VI

Question 61

The muscles that initiate flexion at the elbow joint (biceps brachii and brachialis) are innervated by what nerve from the lateral cord?

A) ulnar
B) musculocutaneous
C) median
D) radial

Question 62

The phrenic nerve receives fibers from

A) T1-T7.
B) CN X.
C) CN XI.
D) C3-C5.

Question 63

Tactile corpuscles (Meissnerʹs corpuscles)

A) are free unencapsulated dendritic endings.
B) are nociceptors.
C) occur in dermal papillae.
D) occur in hairy skin.

Question 64

The cranial nerve pair with large branches that passes through the foramen ovale of the skull is

A) VII.
B) V.
C) I.
D) III.

Question 65

When you contract your Biceps brachii muscle, you are utilizing the somatic sensory portion of the nervous system.

Question 66

Motor neurons to skeletal muscle belong to the

A) afferent division of the autonomic nervous system.
B) visceral division of the nervous system.
C) somatic division of the nervous system.
D) autonomic nervous system.

Question 67

Exteroceptors process information from visceral organs.

Question 68

The lateral cord of the brachial plexus forms directly from

A) roots C7-T1.
B) the anterior divisions of the upper and middle trunks.
C) the upper, middle, and lower trunks.
D) the posterior divisions of the middle and lower trunks.

Question 69

Migraine headaches result when cerebral arteries dilate in response to neurotransmitters released from the

A) vestibulocochlear nerve.
B) abducens nerve.
C) trigeminal nerve.
D) facial nerve.

Question 70

All of the special senses taste, smell, vision, hearing, and equilibrium are part of the afferent division of the peripheral nervous system.

Question 71

Both the parasympathetic and sympathetic divisions are part of the somatic motor nervous division.

Question 72

Disorders of balance may follow trauma to which nerve?

A) vestibulocochlear
B) trigeminal
C) accessory
D) abducens

Question 73

Which nerve does not arise from the anterior division of the brachial plexus?

A) ulnar
B) musculocutaneous
C) median
D) radial

Question 74

Which of these nerves arises from the posterior cord of the brachial plexus?

A) musculocutaneous
B) median
C) radial
D) ulnar

Question 75

Starting at the spinal cord and proceeding distally, the subdivisions of the brachial plexus are

A) rami, trunks, divisions, cords.
B) trunks, divisions, cords, rami.
C) divisions, rami, trunks, cords.
D) rami, divisions, cords, trunks.

Question 76

Which cranial nerve pair is comprised of ventral rootlets from C1-C5?

A) glossopharyngeal
B) abducens
C) accessory
D) hypoglossal

Question 77

Which of these statements about intercostal nerves is true?

A) They are part of a nerve plexus.
B) They consist of 12 pairs.
C) The ventral rami of T1-T12 spinal nerves lie just inferior to each rib.
D) They innervate only the intercostal muscles.

Question 78

All of the following are exteroceptors: tactile corpuscles, lamellar corpuscles, and tactile epithelial cells.

Question 79

A lesion/injury to the radial nerve causes

A) footdrop.
B) the ʺhand of benediction.ʺ
C) wrist-drop.
D) claw hand.

Question 80

The only cranial nerve that travels into the abdomen is the

A) vestibulocochlear.
B) vagus.
C) hypoglossal.
D) glossopharyngeal.