cranial nerves + brainstem

Question 1

which CN have just sensory function

Answer 1

-olfactory I
-optic II
-vestibulocochlear VIII

Question 2

which CN have just motor function

Answer 2

-oculomotor III
-trochlear IV
-abducens VI
-accessory XI
-hypoglossal XII

Question 3

which CN have both sensory and motor function

Answer 3

-trigeminal V
-facial VII
-glossopharengeal IX
-vagus X

Question 4

which CN exit from midbrain

Answer 4

-oculomotor III (anterior)
-trochlear IV (posterior)

Question 5

which CN exit from pons and pontomedullary region

Answer 5

pons:
-trigeminal V
pontomedullary region:
-abducens VI
-facial VII
-vestibulocochlear VIII

Question 6

which CN exit from medulla

Answer 6

-vestibulocochlear VIII
-glossopharengeal IX
-vagus X
-accessory XI
-hypoglossal XII

Question 7

what forms the cerebral peduncles

Answer 7

white matter spinal tracts

Question 8

olfactory I function

Answer 8

sensory: smell

Question 9

trigeminal V parts

Answer 9

V1 - opthalamic division
V2 - maxillary division
V3- mandibular division

Question 10

trigeminal V1 function

Answer 10

sensory for upper eye lid, forehead

Question 11

trigeminal V2 function

Answer 11

sensory for cheek and nose

Question 12

trigeminal V3 function

Answer 12

sensory for anterior 2/3 tongue
motor to muscles of mastication

Question 13

facial VII function

Answer 13

sensory:
-taste anterior 2/3 tongue
-general sensory from skin of face
motor:
-muscles of facial expressions
-secretion of tears + saliva

Question 14

vestibulocochlear VIII function

Answer 14

sensory for hearing and equilibrium

Question 15

glossopharengeal IX function

Answer 15

sensory: general + taste for posterior 1/3 tongue
motor: muscles for swallowing, secrete saliva (parotid gland)

Question 16

vagus X function

Answer 16

-sensory for larynx and pharynx
-voluntary motor to larynx and pharynx
-extensive parasympathetic innervation of thoracic and abdominal viscera (respiratory, circulatory etc)

Question 17

accessory XI function

Answer 17

motor: sternocleidomastoid and trapezius

Question 18

hypoglossal XII function

Answer 18

motor: muscles of tongue, swallowing, speech

Question 19

optic II function

Answer 19

sensory: vision

Question 20

oculomotor III function

Answer 20

motor: controls inferior, superior, medial rectus muscles and inferior oblique muscles and levator plapabrae
-constricts pupil

Question 21

trochlear IV function

Answer 21

motor: controls superior oblique muscle

Question 22

abducens VI function

Answer 22

motor: controls lateral rectus muscle