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SAC A&P I > Ch. 13 PNS > Flashcards

Ch. 13 PNS Flashcards

1
Q

The conversion of the energy of a stimulus into a graded potential is called ?

A

Transduction

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2
Q

What cranial nerve innervates most of the visceral organs?

A

Vagus (X)

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3
Q

What cranial nerve only carries motor information?

A

Abducens (VI)

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4
Q

The Phrenic nerve is a branch from the ____ plexus.

A

Cervical

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5
Q

The large onion shaped receptors found deep in the dermis and subcutaneous tissue that respond too deep pressure are ?

A

Lamellar corpuscles

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6
Q

Proprioceptors include all of the following except ?

A) Muscle spindles
B) Tendon organs
C) Epithelial tactile complexes
D) Joint kinesthetic receptors

A

Epithelial tactile complexes

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7
Q

The aspect of sensory perception by which the cerebral cortex indentifies the site and pattern of stimulation is called ?

A

Spatial discrimination

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8
Q

Dorsal root ganglia contain ____ ____of sensory neurons.

A

Cell bodies

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9
Q

What is a pain, itch, and temperature receptor?

A

Free nerve ending

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10
Q

What receptor discriminates touch in hairless skin?

A

Tactile corpuscle

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11
Q

What contains receptor endings wrapped around thick collagen bundles?

A

Tendon organ

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12
Q

What receptor is a rapidly adapting deep pressure receptor?

A

Lamellar corpuscle

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13
Q

What cranial nerve causes pupillary constriction?

A

Oculomotor (III)

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14
Q

What cranial nerve is the major sensory nerve of the face?

A

Trigeminal (V)

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15
Q

What cranial nerve serves the sternocleidomastoid and trapezius muscles?

A

Accessory (XI)

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16
Q

Which cranial nerves are purely sensory?

A

Olfactory (I) and Optic (II)

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17
Q

What cranial nerve serves the tongue muscles?

A

Hypoglossal (XII)

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18
Q

What cranial nerve allows you to chew your food?

A

Trigeminal (V)

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19
Q

What cranial nerve is impaired in Bell’s Palsy?

A

Facial (VII)

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20
Q

What cranial nerve helps regulate heart activity?

A

Vagus (X)

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21
Q

What cranial nerve helps you hear and maintain your balance?

A

Vestibulocochlear (VIII)

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22
Q

Which cranial nerves contain parasympathetic motor fibers?

A

Oculomotor (III), Facial (VII), Glossopharyngeal (IX), and Vagus (X)

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23
Q

What nerve innervates the diaphragm?

A

Phrenic nerve of the cervical plexus

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24
Q

What nerve innervates the posterior muscles of the leg?

A

Tibial nerve of the sacral plexus

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25
Q

What nerve innervates the anterior thigh muscles?

A

Femoral nerve of the lumbar plexus

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26
Q

What nerve innervates the medial thigh muscles?

A

Obturator nerve of the lumbar plexus

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27
Q

What nerve innervates the anterior muscles that flex the forearm?

A

Musculocutaneous nerve of the brachial plexus

28
Q

Which nerves innervates the muscles that flex the hand and digits?

A

Median and Ulnar nerves of the brachial plexus

29
Q

What nerve innervates the muscles that extend the hand and digits?

A

Radial nerve of the brachial plexus

30
Q

What nerve innervates the skin and extensor muscles of the posterior arm?

A

Radial nerve of the brachial plexus

31
Q

What nerve innervates the fibularis, tibialis anterior, and toe extensors?

A

Common fiblar nerve of the sacral plexus

32
Q

Which nerves innervate the elbow joint?

A

Median, Musculocutaneous, Radial, and Ulnar nerves

33
Q

The connective tissue sheath that surrounds a fascicle of nerve fibers is the ?

A

Perineurium

34
Q

A ____ reflex causes reciprocal activation of the antagonist muscle.

A

Tendon

35
Q

____ reflexes involve a reflex initiated on and affecting the same side.

A

Ipsilateral

36
Q

____ reflexes involve a reflex that is initiated on one side of the body and affects the other side.

A

Contralateral

37
Q

_____ reflexes consist of an ipsilateral withdrawal reflex and a contralateral extensor reflex that usually aids in maintaining balance.

A

Crossed-extensor

38
Q

A reflex that causes muscle relaxation and lengthening in response to muscle contraction is called a ____.

A

Golgi tendon reflex

39
Q

Irritation of a major nerve of the ____ plexus may cause hiccups.

A

Cevical plexus

40
Q

The “knee jerk” reflex is an example of a ____ reflex.

A

Stretch

41
Q

Problems in balance may follow trauma to which nerve?

A

Vestibulocochlear (VIII)

42
Q

A drooping eyelid and dilated pupil would most likely indicate a problem with the ____ nerve.

A

Oculomotor (III)

43
Q

Ruffini’s end organ is an example of a ____ in the skin.

A

Mechanoreceptor

44
Q

Which connective tissue layer directly surrounds individual axons in a nerve?

A

Endoneurium

45
Q

Nerves that carry impulses toward the CNS only are ______ nerves.

A

Afferent

46
Q

Ganglia associated with ? fibers contain cell bodies of sensory neurons.

A

Afferent

47
Q

Ganglia associated with ? fibers mostly contain cell bodies of autonomic motor neurons.

A

Efferent

48
Q

Damage to which plexus would result in loss of respiratory function?

A

Cervical

49
Q

The Rami Communicantes contain ? nerve fibers.

A

Autonomic (Visceral)

50
Q

What role does an interneuron play during the knee-jerk reflex?

A

Afferent fibers from the stretched extensor muscle synapse to inhibit antagonistic muscles

51
Q

What reflex is most associated with painful stimuli?

A

The Flexor, or Withdrawal, reflex causes automatic movement away from a painful stimulus

52
Q

Neuron type found in the ventral horn.

A

Efferent

53
Q

Neuron type found in the dorsal root ganglion.

A

Afferent

54
Q

Fiber type found in the ventral root.

A

Efferent

55
Q

Fiber type found in the dorsal root.

A

Afferent

56
Q

Damage to this fiber type would lead to a loss of sensory function.

A

Afferent

57
Q

Damage to this fiber type results in a loss of motor function.

A

Efferent

58
Q

What cranial nerve is involved in shrugging the shoulders?

A

Accessory (XI)

59
Q

What cranial nerve is involved in smelling a flower?

A

Olfactory (I)

60
Q

What cranial nerve raises the eyelids and focuses the lens of the eye?

A

Oculomotor (III)

61
Q

What cranial nerve slows the heart and increases motility of the digestive tract?

A

Vagus (X)

62
Q

What cranial nerve is involved in smiling?

A

Facial (VII)

63
Q

What cranial nerve is involved in chewing gum?

A

Trigeminal (V)

64
Q

What cranial nerve is involved in listening to music and seasickness?

A

Vestibulocochlear (VIII)

65
Q

What cranial nerve is involved in tasting well-seasoned food?

A

Facial (VII)

66
Q

What cranial nerve is involved in feeling a toothache?

A

Trigeminal (V)

67
Q

What cranial nerve is involved in reading?

A

Optic (II)

SAC A&P I (13 decks)

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