Exam 1 - CN

Question 1

major cn for speech

Answer 1

V
VII
IX
X
XI
XII

Question 2

CN I

Answer 2

Olfactory
special sensory (afferent) nerve
processes smell

Question 3

CN II

Answer 3

Optic
special sensory (afferent) nerve

Question 4

CN III

Answer 4

Oculomotor
motor to eye
controls eye movement upward, downward, medially
controls pupil constriction

Question 5

CN IV

Answer 5

Trochlear
motor to eye
controls eye movement downward and outward

Question 6

CN V

Answer 6

Trigeminal
motor + sensory
controls motor to muscles of the jaw
sensory to face and jaw

Question 7

CN VI

Answer 7

Abducens
motor to eye
controls lateral eye movement

Question 8

CN VII

Answer 8

Facial
controls motor to muscles of the face
controls motor to stapedius muscle
sensory (taste) to anterior tongue

Question 9

CN VIII

Answer 9

Vestibulocochlear
special sensory (afferent) nerve
controls hearing and balance

Question 10

CN IX

Answer 10

Glossopharyngeal
motor + sensory
controls motor to stylopharyngeus muscle
sensory to posterior tongue and upper pharynx
motor function not specifically testable, but damage may affect swallowing

Question 11

CN X

Answer 11

Vagus
large nerve with multiple branches that controls motor to palate, pharynx, and larynx
sensory to viscera and parts of the head

Question 12

CN XI

Answer 12

Accessory
controls motor to sternocleidomastoid

Question 13

CN XII

Answer 13

Hypoglossal
controls motor to intrinsic and most extrinsic muscles of the tongue (except palatoglossus)