Chapter 14 The Peripheral Nervous System

11) Which cranial nerve, along with cranial nerve pair II, relays specific somatic sensory impulses?

A) I

B) II

C) IV

D) V

E) VIII

E) VIII

12) 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

C) IV

13) 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

E) VIII

14) 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

C) IV

15) 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

B) II

16) 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

C) IV

17) 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

E) XII

18) Damage to which cranial nerve pair can cause difficulties in speech and swallowing?

A) IV

B) V

C) VIII

D) XI

E) XII

E) XII

19) The spinal root of which cranial nerve pair innervates the sternocleidomastoid and trapezius muscles?

A) IV

B) V

C) VIII

D) XI

E) XII

D) XI

20) Damage to which cranial nerve pair can cause deafness and problems with equilibrium?

A) IV

B) V

C) VIII

D) XI

E) XII

C) VIII

21) Which cranial nerve pair has three major branches, the maxillary, mandibular, and ophthalmic divisions?

A) IV

B) V

C) VIII

D) XI

E) XII

B) V

22) Which of the cranial nerve listed below is the largest in diameter?

A) IV

B) V

C) VIII

D) XI

E) XII

B) V

23) 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

D) XI

24) 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

A) I

25) Damage to which cranial nerve pair may result in anosmia?

A) I

B) II

C) IV

D) V

E) VIII

A) I

26) An example of an encapsulated receptor is

A) a hair follicle receptor.

B) a tendon organ.

C) a tactile epithelial cell (Merkel disc).

D) a lamellar corpuscle (Pacinian corpuscle).

D) a lamellar corpuscle (Pacinian corpuscle).

27) A lesion to the common fibular nerve causes

A) footdrop.

B) paralysis of the peroneal muscles.

C) hammer toe.

D) the same deficit as a ruptured calcaneal tendon causes.

A) footdrop.

28) A pudendal nerve block may be given

A) to treat pain from sciatica.

B) in surgery to halt breathing temporarily.

C) in surgery to relax the muscles that cover the fibula.

D) to a woman giving birth.

D) to a woman giving birth.

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

A) ventral root of spinal nerves.

B) dorsal root of spinal nerves.

C) sympathetic nerve pathway.

D) pathway of parasympathetic neurons.

B) dorsal root of spinal nerves.

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

A) mechanoreceptor and interoceptor.

B) mechanoreceptor and proprioceptor.

C) nociceptor and exteroceptor.

D) baroreceptor and proprioceptor.

B) mechanoreceptor and proprioceptor.

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

A) mechanoreceptor and interoceptor.

B) mechanoreceptor and proprioceptor.

C) nociceptor and exteroceptor.

D) baroreceptor and proprioceptor.

A) mechanoreceptor and interoceptor.

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

A) ulnar

B) median

C) axillary

D) radial

D) radial

33) The tibial and common fibular nerves branch from the ________ nerve.

A) sciatic

B) pudendal

C) axillary

D) femoral

A) sciatic

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) rami communicantes

B) dorsal and ventral root ganglia

C) ventral and dorsal rami

D) the brachial plexus

C) ventral and dorsal rami

35) Anesthetic injection to which nerve may block pain during childbirth?

A) sciatic

B) femoral

C) pudendal

D) obturator

C) pudendal

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

A) trigeminal

B) trochlear

C) optic

D) facial

B) trochlear

37) The major nerve plexus to the upper limbs is the

A) brachial plexus.

B) sacral plexus.

C) cervical plexus.

D) lumbar plexus.

A) brachial plexus.

38) Contraction rate of the diaphragm is controlled by which nerve?

A) phrenic

B) vagus

C) trigeminal

D) trochlear

A) phrenic

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

A) median.

B) axillary.

C) ulnar.

D) musculocutaneous.

A) median.

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

A) primary sensory endings.

B) secondary sensory endings.

C) α efferent neurons.

D) γ efferent neurons.

C) α efferent neurons.

41) 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) VI

B) XII

C) XI

D) I

C) XI

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

A) facial

B) vestibulocochlear

C) accessory

D) trochlear

B) vestibulocochlear

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

A) I and II

B) V and XII

C) VI and VII

D) IX and X

D) IX and X

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

A) free nerve endings

B) tactile corpuscles (Meissner's corpuscles)

C) lamellar corpuscles (Pacinian corpuscles)

D) bulbous corpuscles (Ruffini endings)

B) tactile corpuscles (Meissner's corpuscles)

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

A) facial.

B) optic.

C) trigeminal.

D) vagus.

B) optic.

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

A) trigeminal.

B) facial.

C) glossopharyngeal.

D) accessory.

D) accessory.

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

A) median

B) phrenic

C) radial

D) ulnar

B) phrenic

48) The gastrocnemius muscle is innervated by the ________ nerve.

A) obturator

B) common peroneal

C) tibial

D) femoral

C) tibial

49) Which of the following regions is not innervated by nerves of the sacral plexus (L4 - S4)?

A) posterior thigh

B) anterior thigh muscles

C) foot

D) external genitalia

B) anterior thigh muscles

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

A) abducens

B) oculomotor

C) optic

D) trochlear

C) optic

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

A) lumbar plexus.

B) femoral plexus.

C) sacral plexus.

D) thoracic plexus.

C) sacral plexus.

52) The abducens nerve (CN VI)

A) innervates the lateral rectus muscle of the eye.

B) relays sensory information from the taste buds on the tongue.

C) exits from the medulla.

D) if paralyzed, results in Bell's palsy.

A) innervates the lateral rectus muscle of the eye.

53) An injury to the ulnar nerve causes

A) claw hand.

B) inability to oppose the thumb.

C) the "hand of benediction."

D) wrist drop.

A) claw hand.

54) Spinal nerves are

A) present in 31 pairs.

B) located exclusively in the vertebral canal.

C) present only in the thoracic region where plexuses are absent.

D) purely sensory nerves.

A) present in 31 pairs.

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

A) I

B) III

C) V

D) VII

D) VII

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

A) somatic sensory only

B) somatic motor and general somatic sensory

C) somatic sensory, visceral sensory, and visceral motor

D) somatic motor only

B) somatic motor and general somatic sensory

57) The primary nerve to muscles of the anterior thigh is the

A) sciatic.

B) obturator.

C) sural.

D) femoral.

D) femoral.

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

A) mandibular

B) ovale

C) rotundum

D) spinosum

D) spinosum

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

A) I, IX, and X

B) VII, VIII, and XII

C) V, XI, and XII

D) III, IV, and VI

D) III, IV, and VI

60) What specific dermatome lies at the level of the navel?

A) C2

B) S4

C) T10

D) T1

C) T10

61) Tactile corpuscles (Meissner's corpuscles)

A) occur in hairy skin.

B) occur in dermal papillae.

C) are nociceptors.

D) are free unencapsulated dendritic endings.

B) occur in dermal papillae.

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

A) abducens

B) accessory

C) glossopharyngeal

D) hypoglossal

B) accessory

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

A) median

B) musculocutaneous

C) radial

D) ulnar

C) radial

64) Which of these statements about intercostal nerves is true?

A) They are part of a nerve plexus.

B) They innervate only the intercostal muscles.

C) The ventral rami of T1-T12 spinal nerves lie just inferior to each rib.

D) They consist of 12 pairs.

C) The ventral rami of T1-T12 spinal nerves lie just inferior to each rib.

65) The lateral cord of the brachial plexus forms directly from

A) the upper, middle, and lower trunks.

B) the posterior divisions of the middle and lower trunks.

C) the anterior divisions of the upper and middle trunks.

D) roots C7-T1.

C) the anterior divisions of the upper and middle trunks.

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

A) median

B) musculocutaneous

C) radial

D) ulnar

C) radial

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

A) abducens nerve.

B) facial nerve.

C) trigeminal nerve.

D) vestibulocochlear nerve.

C) trigeminal nerve.

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

is

A) I.

B) III.

C) V.

D) VII.

C) V.

69) A lesion/injury to the radial nerve causes

A) footdrop.

B) claw hand.

C) the "hand of benediction."

D) wrist-drop.

D) wrist-drop.

70) The phrenic nerve receives fibers from

A) C3-C5.

B) T1-T7.

C) CN X.

D) CN XI.

A) C3-C5.

71) The only cranial nerve that travels into the abdomen is the

A) vagus.

B) hypoglossal.

C) glossopharyngeal.

D) vestibulocochlear.

A) vagus.

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

A) radial

B) median

C) ulnar

D) musculocutaneous

D) musculocutaneous

73) Motor neurons to skeletal muscle belong to the

A) somatic division of the nervous system.

B) autonomic nervous system.

C) afferent division of the autonomic nervous system.

D) visceral division of the nervous system.

A) somatic division of the nervous system.

74) Disorders of balance may follow trauma to which nerve?

A) abducens

B) vestibulocochlear

C) trigeminal

D) accessory

B) vestibulocochlear

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

A) rami, trunks, divisions, cords.

B) rami, divisions, cords, trunks.

C) divisions, rami, trunks, cords.

D) trunks, divisions, cords, rami.

A) rami, trunks, divisions, cords.