The Hypoglossal nerve (CNXII) & The Muscles of the Tongue

This week let’s look at the muscles of the tongue and the nerve that is responsible for providing motor innervation to (almost) all these muscles. We will explore types of muscle, functions, and the classic exam question of 'what happens when the hypoglossal nerve is damaged'.

Terms explored this week; Intrinsic (longitudinal, transverse, and vertical) and extrinsic (palatoglossus, hyoglossus, styloglossus, genioglossus) muscles of the tongue. The hypoglossal nerve & hypoglossal canal.

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