SUBMANDIBULAR GANGLION
INTRODUCTION:-
It is a peripheral parasympathetic ganglion.
Relay station for secretomotor fibres to submandibular and sublingual glands.
Topographically, it is related to the trigeminal nerve (lingual nerve).
But functionally, it is related to the facial nerve (through its chorda tympani nerve).
It is also known as Langley's ganglion.
SIZE:-
Pin-head.
LOCATION:-
Fusiform ganglion.
It is situated on the outer surface of the hyoglossus muscle.
It is suspended from lingual nerve by two twigs
The proximal twig is afferent to the ganglion and distal root is efferent to the ganglion.
RELATION:-
Above: lingual nerve
Below: deep part of the submandibular gland
Medial: hyoglossus muscle
Lateral: submandibular ganglion (superficial part)
ROOTS:-
Submandibular ganglion has 3 roots
Parasympathetic
Sympathetic
Sensory
Parasympathetic:-
It is derived from lingual nerve.
Sympathetic:-
It is derived from sympathetic plexus around the facial artery.
Sensory:-
It is derived from lingual nerve.
BRANCHES:-
Five to six branches, which supply the submandibular gland.
Other fibers join the lingual nerve to supply the sublingual and anterior lingual glands.
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