Inferior longitudinal muscle of the tongue

Dr Craig Hacking et al.

The inferior longitudinal muscle of the tongue is one of the 4 intrinsic muscles of the tongue which alters the shape of the tongue mass, being entirely confined to the tongue without an attachment outside the tongue (like the extrinsic muscles of the tongue).

Gross anatomy

The muscles fibres attach proximally to the root of the tongue and attach distally to the tongue apex.

They lie superior to the transverse and vertical intrinsic muscles. Like all the intrinsic muscles of the tongue, it is innervated by the hypoglossal nerve (CN XII).

The fibres act to curl the apex and lateral sides of the tongue downwards and when acting together with the superior longitudinal muscle of the tongue it shortens and retracts the tongue when protruded (i.e. retrudes the tongue).

Head and neck anatomy
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Article information

rID: 52488
System: Head & Neck
Section: Anatomy
Synonyms or Alternate Spellings:

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