Cranial Nerves

Question 1

Somatic Motor (SM) & Proprioceptive 
(Pr) - eye muscles - Parasympathetic (Para) - sphincter of pupil (cause 
constriction) and Ciliary muscle of the lens (allows accomodation to distance)

Answer 1

Oculomotor nerve III (Oh)

Question 2

SM&Pr - superior oblique muscle of the

eye

Answer 2

Trochlear nerve IV (To)

Question 3

means 3 twins - denoted by subscripts
V1 is Opthalmic Branch - Sense - scalp forehead nose upper eyelid and cornea -
V2 is Maxillary Branch - Sense - palate - upper jaw - upper teeth and gums -
nasopharynx - nasal cavity - skin of cheek - lower eyelid - upper lip
V3 is Mandibular Branch - Sense - lower jaw - lower teeth and gums - anterior 2/3
of tongue - mucous membrane of cheek - lower lip - skin of chin - auricle - and
temporal region - SM&Pr - muscles of mastication - soft palate - throat - and
middle ear

Answer 3

Trigeminal nerves V (Touch)

Question 4

SM&Pr - lateral eye muscles - called

the lateral rectus

Answer 4

Abductens VI (And)

Question 5

Sense - taste from anterior 2/3 of tongue -
Sense - external ear - palate - SM&Pr - muscles of facial expression - throat - and
middle ear - Para - salivary glands - lacrimal glands - glands of the nasal cavity
and palate

Answer 5

Facial VII (Feel)