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Biology 421 - Comparative anatomy > Cranial Nerves > Flashcards

Cranial Nerves Flashcards

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1
Q

What is CN I? Motor, sensory, or mixed?

A

olfactory, sensory

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2
Q

Is The olfactory visceral or somatic sensory?

A

visceral

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3
Q

what structure does The olfactory nerve innervate?

A

olfactory tissue

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4
Q

What is CN II? Motor, sensory, or mixed?

A

optic, sensory

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5
Q

is CN II visceral or somatic sensory?

A

somatic

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6
Q

what structure does The optic nerveinnervate?

A

optic tissue

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7
Q

Where does The optic nerve decussate?

A

optic chiasma

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8
Q

What is CN III? Motor, sensory, or mixed?

A

occulomotor, motor

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9
Q

is the occulomotor visceral or somatic motor?

A

both

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10
Q

what skeletal muscles are innervated by the occulomotor

A

dorsal rectus, medial rectus, ventral rectus, inferior oblique

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11
Q

what smooth muscles are innervated by the occulomotor

A

intrinsic eye muscles

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12
Q

What is CN IV? Motor, sensory, or mixed?

A

trochlear, motor

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13
Q

is the trochlear visceral or somatic motor?

A

somatic

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14
Q

what does the trochlear innervate?

A

dorsal oblique

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15
Q

What is CN V? Motor, sensory, or mixed?

A

Trigeminal, mixed

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16
Q

is the trigeminal visceral or somatic motor/ sensory?

A

Somatic motor, somatic sensory

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17
Q

What muscles does the trigeminal innervate? Sensory structures?

A

mandibular arch muscles, skin of head, teeth, nasal passages,tongue

18
Q

What is CN VI? Motor, sensory, or mixed?

A

Abducens, motor

19
Q

is the abducens somatic or visceral motor?

A

somatic motor

20
Q

what does the Abducens innervate

A

lateral rectus

21
Q

What is CN VII? Sensory, motor, or mixed?

A

Facial, mixed

22
Q

Is the facial nerve visceralor somatic?

A

both

23
Q

What does the facial nerve innervate?

A

muscles of facial expression, lacrimal, sublingual, submandibular

24
Q

what sensory structure does the facial nerve innervate?

A

taste buds in anterior 2/3 of tongue, ectoderm in fishes

25
Q

what is CN VIII? Sensory, motor, or mixed?

A

vestibulocochlear, sensory

26
Q

IS the vestibulocochlear visceral or somatic?

A

somatic

27
Q

what does the vestibulocochlear innervate?

A

semi-circular canals,cochlea

28
Q

What is CN IX? Sensory, motor,or mixed?

A

glossopharyngeal, mixed

29
Q

is the glossopharyngeal somatic or visceral?

A

both

30
Q

what muscles does the glossopharyngeal innervate?

A

muscles derived from 1st branchial arch

31
Q

what sensory structures does the glossopharyngeal innervate?

A

posterior 1/3 of tongue

32
Q

What is CN X? Sensory, motor, or mixed?

A

vagus, mixed

33
Q

Is the vagus somatic or visceral?

A

both

34
Q

what sensory structures does the vagus innervate?

A

posterior pharynx, thoracic and abdominal viscera

35
Q

What muscles does the vagus innervate? Glands?

A

intrinsic muscles of the larynx, smooth muscle, glands of thoracic, abdominal viscera, cardiac muscle

36
Q

What is CN XI? Sensory, motor, mixed?

A

accessory, motor

37
Q

is the accessory somatic or visceral?

A

somatic

38
Q

what does the accessory innervate?

A

sternomastoid, trapezius, cleidomastoid

39
Q

what is CN XII? sensory, motor, mixed?

A

hypoglossal, motor

40
Q

is the hypoglossal visceral or somatic?

A

somatic

41
Q

what does the hypoglossal innervate?

A

muscles of tongue

Biology 421 - Comparative anatomy (25 decks)

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