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Extrinsic muscles of the tongue

Extrinsic muscles of the tongue

Extrinsic Muscles
The extrinsic muscles are as follows:

Genioglossus
Attachments: Arises from the mental symphysis and inserts into the dorsum of the tongue
Function: Inferior fibres protrude the tongue, middle fibres depress the tongue, and superior fibres draw the tip back and down
Innervation: Motor innervation via the hypoglossal nerve (CNXII).

Hyoglossus
Attachments: Arises from the hyoid bone and inserts into the side of the tongue
Function: Depresses and retracts the tongue
Innervation: Motor innervation via the hypoglossal nerve (CNXII).

Styloglossus
Attachments: Originates at the styloid process of the temporal bone and inserts into the side of the tongue
Function: Retracts and elevates the tongue
Innervation: Motor innervation via the hypoglossal nerve (CNXII).

Palatoglossus
Attachments: Arises from the palatine aponeurosis and inserts broadly across the tongue
Function: Elevates the posterior aspect of the tongue
Innervation: Motor innervation via the vagus nerve (CNX).
All of the intrinsic and extrinsic muscles are innervated by the hypoglossal nerve (CN XII), except palatoglossus, which has vagal innervation (CN X).

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Which muscle of the tongue has vagal innervation?