Vertical muscle of tongue explained

Vertical muscle of tongue
Latin:	musculus verticalis linguae
Origin:	Submucosal fibrous layer of dorsum of tongue
Insertion:	Inferior surface borders of tongue
Nerve:	Hypoglossal nerve (CN XII)
Action:	Flattens and broadens tongue

The vertical muscle of the tongue is an intrinsic muscle of the tongue. Its fibers extend from the upper to the under surface of the tongue. It is innervated by the hypoglossal nerve (cranial nerve XII). Its contraction flattens, widens and elongates the tongue.

Anatomy

The vertical muscle of the tongue is an intrinsic muscle of the tongue.^[1] It is found only at the borders of the forepart of the tongue.

Structure

Fibres of the vertical muscle of the tongue are arranged in an almost vertical direction, and intersect the transversely oriented fibres of the transverse muscle of tongue. Fibers of the vertical muscle of the tongue extend from the upper to the under surface of the tongue.

Innervation

The vertical of the tongue is innervated by the hypoglossal nerve (CN XII).^[2]

Function

Contraction of the vertical muscle of the tongue flattens, widens and elongates the tongue.

References

1. Book: Aggarwal. Annu. https://www.sciencedirect.com/science/article/pii/B9780444520142000446. Handbook of Clinical Neurology. Thompson. Philip D.. Elsevier. 2011. 978-0-444-52014-2. 617–628. en. 44 - Unusual focal dyskinesias. 100 . 10.1016/B978-0-444-52014-2.00044-6. 21496611 . 0072-9752.
2. Book: Love. Russell J.. https://www.sciencedirect.com/science/article/pii/B9780750690768500137. Neurology for the Speech-Language Pathologist. Webb. Wanda G.. Butterworth-Heinemann. 1992. 978-0-7506-9076-8. 2nd. 112–136. en. 7 - The Cranial Nerves. 10.1016/B978-0-7506-9076-8.50013-7.