Page 124 - Edited - Webster HEAD AND NECK - part 2-Merge PDF

NERVE COMPONENTS LOCATION OF CELL PERIPHERAL FUNCTION
BODIES OF FIBRES DISTRIBUTION

IV Trochlear Efferent (motor) Brainstem One skeletal muscle in Moving eyeball downwards
(Latin "pulley") somatic orbit: the superior and outwards (abduction)
oblique (the tendon of
which passes through a
pulley)

V Trigeminal Afferent (sensory) Trigeminal (asynaptic) Skin of face to vertex; Touch, pain, temperature
[Latin "Triplets": somatic ganglion in the cran- conjunctiva; mucous mem-
because the nerve (all three ial cavity (middle branes of mouth, nasal

has 3 major divis- divisions) fossa) cavity, nasopharynx, para-
ions: nasal sinuses; teeth;
Ophthalmic ("eye") - VI meninges of anterior and
Maxillary ("check") - V2 middle fossae; HN 316
Mandibular ("jaw")] - V3 small muscles of face and proprioception
orbit and mouth

Efferent (motor) Brainstem Primary muscles of mastic- Chewing, articulation
somatic ation; tensor tympani and of speech,
(mandibular tensor veli palatini swallowing and vomiting
division only)

VI Abducent Efferent (motor) Brainstem One skeletal muscle in orbit: Abducts (laterally rotates)
(Latin "abduction") somatic the lateral rectus the eyeball

crannerv 2