| Inferior longitudinal muscle of tongue | |
|---|---|
 Coronal section of tongue, showing intrinsic muscles. | |
 The mouth cavity. (Longitudinalis inferior labeled at bottom left.) | |
| Details | |
| Origin | root of tongue |
| Insertion | apex of tongue |
| Nerve | hypoglossal nerve (CN XII) |
| Actions | retracts tongue with superior 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 | |
The inferior longitudinal muscle of tongue is an intrinsic muscle of the tongue.[1] It is situated on the under surface of the tongue between the genioglossus and hyoglossus. It is innervated by the hypoglossal nerve (cranial nerve XII). Its contraction shortens and thickens the tongue.
Structure
The inferior longitudinal muscle of the tongue is an intrinsic muscle of the tongue.[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 the hyoid bone. Anteriorly, its fibres blend with those of the styloglossus, hyoglossus, and genioglossus to form the ventral area of the tip of the tongue.[2]
Innervation
The inferior longitudinal muscle of the tongue is supplied by the hypoglossal nerve (CN XII).[3]
Function
Contraciton of the inferior longitudinal muscle of the tongue shortens and thickens the tongue.[2]
Additional images
References
This article incorporates text in the public domain from page 1130 of the 20th edition of Gray's Anatomy (1918)
- 1 2 Aggarwal, Annu; Thompson, Philip D. (2011). "44 - Unusual focal dyskinesias". Handbook of Clinical Neurology. Vol. 100. Elsevier. pp. 617–628. doi:10.1016/B978-0-444-52014-2.00044-6. ISBN 978-0-444-52014-2. ISSN 0072-9752. PMID 21496611.
- 1 2 3 Dotiwala, Ary K.; Samra, Navdeep S. (2022), "Anatomy, Head and Neck, Tongue", StatPearls, Treasure Island (FL): StatPearls Publishing, PMID 29939559, retrieved 2023-01-13
- ↑ Love, Russell J.; Webb, Wanda G. (1992). "7 - The Cranial Nerves". Neurology for the Speech-Language Pathologist (2nd ed.). Butterworth-Heinemann. pp. 112–136. doi:10.1016/B978-0-7506-9076-8.50013-7. ISBN 978-0-7506-9076-8.