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A&P 1 IPAP (20-1) > Cranial nerves > Flashcards

Cranial nerves Flashcards

1
Q

Which cranial nerves contain only sensory neurons?

A

Cranial I (olfactory) and cranial II (optic)

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2
Q

Which mixed cranial nerve is mostly sensory?

A

cranial nerve VIII (vestibulocochlear)

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3
Q

Which mixed cranial nerves is mostly motor?

A

cranial nerves 3,4,6,11, & 12

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4
Q

What is the sensory function of the mixed nerves that are mostly motor?

A

proprioception of the muscles over which they exert motor control

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5
Q

which mixed cranial nerves have a almost even amount of sensory and motor?

A

cranial nerves 5,7,9, and 10

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6
Q

Most cranial nerves that have motor function innervate more than one muscle. T or F?

A

T

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7
Q

somatic (skeletal) muscles are innervated by?

A

motor cranial nerves

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8
Q

Which motor cranial nerves posses autonomic motor axons?

A

cranial nerves 3,7,9,10

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9
Q

olfactory bulb and tract are part of the olfactory nerve. T or F?

A

F

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10
Q

The bundle of axons that extend through the cribriform plate of the ethmoid is known as?

A

olfactory

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11
Q

the loss of the sense of smell is known as?

A

anosmia

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12
Q

Which cranial nerve contains myelinated axons that conduct nerve impulses for vision?

A

optic nerve (II)

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13
Q

optic nerve versus optic tract is known as?

A

optic chiasma

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14
Q

The rods and cones in the retina relay signals to which cells?

A

bipolar cells

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15
Q

Which cell axons are the optic nerve and optic tract made from?

A

axons of ganglion cell

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16
Q

Which cranial nerve is the only one that controls the extrinsic and intrinsic eye muscles?

A

Occulomotor (III)

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17
Q

What is the name of the muscle of the upper eyelid innervated by the Occulomotor (III) nerve?

A

levator palpebrae superioris

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18
Q

The innervation of the intrinsic eye muscle by cranial nerve (III) is sympathetic. T or F?

A

F

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19
Q

Which cranial nerve is the smallest?

A

Cranial nerve (IV) or Trochlear

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20
Q

Which part of the eye does the trochlear (IV) nerve innervate?

A

oblique muscle of the eye

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21
Q

Which is the only cranial nerve to arise from the posterior aspect of the brain stem

A

Trochlear (IV) nerve

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22
Q

Which direction does the superior oblique move the eyeball?

A

inferiorly and laterally

23
Q

Which is the largest cranial nerve?

A

Trigemenal (V) nerve

24
Q

What does the motor neurons of trigeminal (V) nerve control?

A

chewing movements

25
Q

This cranial nerve emerges from pons isolated from other cranial nerves, which is it?

A

trigeminal (V) nerve

26
Q

Which cranial nerve provides sensory neurons to face, head, and anterior 2/3 tactile tongue?

A

trigeminal (V) nerve

27
Q

The motor neurons of which nerve supply the muscles of mastication?

A

trigeminal (V) nerve

28
Q

What are the branches of the large sensory root of the trigeminal (V) nerve?

A

MOM; ophthalmic nerve (v1), maxillary nerve (v2), and mandibular nerve, and (v3)

29
Q

Which nerve is the target of local anesthesia for dentist and physicians?

A

maxillary nerve

30
Q

Which cranial nerve innervates the lateral rectus muscle of the eye?

A

abducens (VI) nerve

31
Q

which cranial nerve moves the eye laterally and causes abduction of the eye?

A

abducens (VI) nerve

32
Q

Which cranial nerve has somatic motor axons innervate stylohyoid and posterior belly of digastric?

A

facial (VII) nerve

33
Q

Which cranial nerve has somatic motor axons innervate stapedius muscles and facial expressions?

A

facial (VII) nerve

34
Q

lacrimal glands, nasal glands, subllingual and submandibular glands receive parasympathetic axons from which cranial nerve?

A

Facial (VII) nerve

35
Q

The anterior two-thirds of the tongue that receive sensory axons from the facial nerve, are also known as?

A

the mobile tongue

36
Q

The branches of the facial nerve include temporal, cervical, and _____

A

zygomatic, buccal, and mandibular

37
Q

Which cranial nerve was formerly known as acoustic or auditory nerve?

A

vestibulocochlear (VIII) nerve

38
Q

Which cranial nerve carry impulses for equilibrium and hearing?

A

vestibulocochlear (VIII) nerve

39
Q

Which cranial nerve provides sensory axons to posterior 1/3 of tongue for taste and tactile sensation?

A

Glossopharyngeal (IX) nerve

40
Q

Glossopharyngeal (IX) nerves provides sensory axons to baroreceptors in carotid sinus and chemoreceptors in ___?

A

carotid bodies

41
Q

Which gland does glossopharyngeal (IX) nerves provide motor fibers?

A

carotid gland

42
Q

which cranial nerve is the longest?

A

vagus

43
Q

What parts of the body will you find vagus nerves?

A

head, neck, thorax, and abdomen

44
Q

What are the somatic functions of the vagus nerve?

A

swallowing, coughing, and voice production

45
Q

Which cranial nerve provides a sensory function of monitoring blood pressure, oxygen, and carbon dioxide?

A

vagus (X) nerves

46
Q

The sensory function of touch, pain, taste, temperature and propioception from epiglottis and pharynx are provided by which cranial nerve?

A

vagus (X) nerves

47
Q

which cranial nerve supports the autonomic control of GI tract smooth muscles, heart rate slowing, and digestive fluid secretion?

A

vagus (X) nerve

48
Q

the hyperactivity of the vagus nerves leads to which condition?

A

ulceration of the stomach

49
Q

what is the treatment option for patients with recurring ulcers?

A

selective vagotomy (partial severing of the right and left gastric nerves)

50
Q

which cranial nerve originates from both the brain stem and spinal cord?

A

accessory (XI) nerve

51
Q

Which cranial nerves provide impulses to voluntary muscles used in swallowing, trapezius, and sternocleidomastoid?

A

Accessory (XI) nerve

52
Q

Which cranial nerve innervates the intrinsic and extrinsic muscles of the tongue except palatoglossus?

A

hypoglossal (XII) nerve

53
Q

What occurs when one genioglossus muscle is inactive?

A

The tongue moves towards the inactive one, while the other one remains intact

A&P 1 IPAP (20-1) (8 decks)

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