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| Inferior longitudinal muscle of tongue | |
|---|---|
 Coronal section oftongue, showing intrinsic muscles. | |
 The mouth cavity. (Longitudinalis inferior labeled at bottom left.) | |
| Details | |
| Origin | Root oftongue |
| Insertion | Apex oftongue |
| Nerve | Hypoglossal nerve (CN XII) |
| Actions | Retracts tongue withsuperior longitudinal muscle, making tongue short and thick |
| Identifiers | |
| Latin | musculus longitudinalis inferior linguae |
| TA98 | A05.1.04.107 |
| TA2 | 2123 |
| FMA | 46694 |
| Anatomical terms of muscle | |
Theinferior longitudinal muscle of tongue is an intrinsic muscle of thetongue.[1] It is situated on the under surface of thetongue between thegenioglossus andhyoglossus.[citation needed] It is innervated by thehypoglossal nerve (cranial nerve XII). Its contraction shortens and thickens the tongue.
The inferior longitudinal muscle of the tongue is anintrinsic muscle of thetongue.[1] It is thin and oval in cross-section. It is situated between the paramedian septum, and the lateral septum.[2] It extends from the root to the apex of the tongue. Posteriorly, some of its fibers attach onto the body of thehyoid bone.[citation needed] Anteriorly, its fibres blend with those of thestyloglossus,hyoglossus, andgenioglossus to form the ventral area of the tip of the tongue.[2]
The inferior longitudinal muscle of the tongue is supplied by thehypoglossal nerve (CN XII).[3]
Contraciton of the inferior longitudinal muscle of the tongue shortens and thickens the tongue.[2]
This article incorporates text in thepublic domain frompage 1130 of the 20th edition ofGray's Anatomy(1918)
