Tongue nerve supply

Tongue nerve supply divided into two parts:


Sensory supply-


1. Anterior 2/3 of tongue-
General sensation (GS) – Trigeminal nerve carry GS from anterior 2/3 of tongue.
Special sensation (SS) – Facial nerve carry SS from anterior 2/3 of tongue.


2. Posterior 1/3 of tongue-
Glossopharyngeal nerve carry both GS and SS from posterior 1/3 of tongue.


3. Posterior most part of tongue-
Vagus nerve carry both GS and SS from posterior most part of tongue.


Motor supply-

All extrinsic and intrinsic muscles of tongue are supplied by hypoglossal nerve (12th cranial nerve) except palatoglossus muscle, it’s supplied by vagus nerve.


NOTE : General Sensation (GS) means temperature, pain sensation from tongue.


NOTE : Special sensation (SS) means taste sensation from tongue.

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