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Cranial Nerves > Functions > Flashcards

Flashcards in Functions Deck (18)
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1
Q

I

A

1) afferent olfactory (nerve only travels from sinus to bulb; olfactory tract is what you see on the brain)

2
Q

II

A

1) afferent visual from retina (not a nerve at all, but an extension of the brain)

3
Q

III

A

1) efferent motor to eye (medial, superior, and inferior rectus muscles and inferior oblique muscle, levator palpebrae);
2) efferent parasympathetic to eye (pupillary constriction)

4
Q

IV

A

1) efferent motor to superior oblique muscle

5
Q

Va

A

1) afferent sensory from upper face, including cornea (forehead, upper eyelid, cornea, conjunctiva, dorsum of nose, nasal membranes)

6
Q

Vb

A

1) afferent sensory from middle portion of face and upper jaw (upper lip, lateral nose, upper cheek, anterior temple, membranes of nose, upper jaw and teeth, roof of mouth)

7
Q

Vc

A

1) efferent motor to muscles of mastication;
2) afferent sensory to lower face and jaw (lower lip, chin, posterior cheek, temple, external ear, lower jaw and teeth, cheeks, floor of mouth, anterior two thirds of tongue)

8
Q

VI

A

1) efferent motor to lateral rectus

9
Q

VII

A

1) efferent motor to superficial facial muscles and stapedius (also posterior belly of digastric muscle);
2) efferent parasympathetic fibers (lacrimal and
salivary glands);
3) afferent gustatory (taste) from anterior tongue;
4) afferent sensory from portion of external ear skin

10
Q

VIIIv

A

1) afferent vestibular information from labyrinth

11
Q

VIIIc

A

1) afferent auditory information from cochlea

12
Q

IX

A

1) efferent motor to pharynx skeletal muscle;
2) efferent parasympathetic fibers to parotid gland;
3) afferent sensory from portion of external ear skin;
4) afferent sensory from pharynx, middle ear, carotid body and sinus;
5) afferent gustatory from posterior tongue

13
Q

X

A

1) efferent motor to striated muscle of palate, pharynx, larynx;
2) efferent parasympathetic fibers to viscera
3) afferent sensory from portion of external ear skin, meninges;
4) afferent sensory from larynx, trachea, gut, aortic
arch;
5) afferent taste from larynx

14
Q

XI

A

1) efferent motor to sternocleidomastoid and trapezius

15
Q

XII

A

1) efferent motor to tongue (intrinsic and extrinsic)

16
Q

Which cranial nerves provide efferent sensory fibers to the Ear?

A

1) Vc
2) VII
3) IX
4) X

17
Q

Which cranial nerves provide afferent gustatory fibers?

A

1) VII from anterior tongue
2) IX from posterior tongue
3) X from larynx

18
Q

Which cranial nerves have efferent parasympathetic fibers?

A

1) III to eye for pupillary contriction
2) VII to the lacrimal and salivary glands
3) IX to parotid gland
4) X to viscera