Vertical muscle of tongue

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Vertical muscle of tongue

The vertical muscle of the tongue is one of the intrinsic muscles of the tongue. It plays a crucial role in the movement and function of the tongue, contributing to its ability to change shape and size. This muscle is essential for various activities such as speech, mastication, and swallowing.

Anatomy

The vertical muscle of the tongue is located within the tongue itself, running from the dorsum (upper surface) to the ventral surface (underside) of the tongue. It interlaces with the transverse muscle of the tongue, another intrinsic muscle, allowing for complex movements and adjustments in the shape of the tongue.

Function

The primary function of the vertical muscle of the tongue is to flatten and broaden the tongue. This action is vital for the articulation of certain sounds during speech and for manipulating food during mastication and swallowing. The muscle works in coordination with other intrinsic and extrinsic muscles of the tongue to achieve these movements.

Innervation

The vertical muscle of the tongue, like all intrinsic muscles of the tongue, is innervated by the hypoglossal nerve (cranial nerve XII). This nerve provides the motor supply necessary for the muscle's function.

Clinical Significance

Dysfunction or damage to the vertical muscle of the tongue can result in difficulties with speech, mastication, and swallowing. Conditions such as hypoglossal nerve palsy can affect the muscle's performance, leading to clinical symptoms that require medical attention.

See Also

• Muscles of the tongue
• Hypoglossal nerve
• Speech
• Mastication
• Swallowing