Page 41 - Edited - Webster HEAD AND NECK - part 2-Merge PDF

HN 239

MANDIBULAR DIVISION (V₃) OF THE TRIGEMINAL
NERVE (Cs.N. V)

A (i) FORAMEN V1
OVALE TRIGEMINAL GANGLION - asynaptic sensory
SENSORY: V2 (touch, pain, temperature).
touch, pain
temperature V3 FORAMEN SPINOSUM
NERVUS SPINOSUS (SENSORY: meninges).
OTIC GANGLION: Synaptic, parasympathetic
secretomotor (parotid salivary
gland)
In infratemporal
AURICULO TEMPOKAL NERVE fossa

INTERIOR ALVEOLAR
LINGUAL N.
N.
SUBMANDIBULAR
GANGLION:
Synaptic,
parasymp.
K.E.W. secretomotor

MENTAL NERVE
Notice that V3 is A(ii) DISTRIBUTION
Sensory to entire TO SKIN OF Cf HN 49
oral Floor. FACE

NOTE: V3 (MANDIBULAR DIVISION OF CrNV) divides
into itse principle nerves in the “pterygoid sandwich”
in the infratemporal fossa ( ). The nerves
to the mandible, tongue & oral floor descend on the lateral surface of the
medial pterygoid muscle, deep to
B MOTOR
SPEAKING & The ramus of the mandible.
SWALLOWING :
TENSOR MUSCLE HEARING : TENSOR MUSCLE OF
OF SOFT PALATE EARDRUM.
(
&
V3 is the only part of the triganial
nerve to contain SKELETOMUTOR AXONS;
The functions are indicated POST-
SYNAPTIC PARASYMPATHETIC AXONS
CHEWING & SPEAKING:
MUSCLES WHICH MOVE THE (secretomotor) accompany branches of the
nerve vis LINGUAL & AURICULOTEMPARAL.
MANDIBLE (
etseq. NERVE TO MYLOHYOID : these axons
Accompany inferior alveolar nerve
as far as the mandibular
foramen (above, and

MYLOHYOID m.

K.E.W.
ANTECIOK BELLY OF HYOID
DIGASTRIC m.