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   » » Wiki: Stylohyoid Muscle
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The stylohyoid muscle is one of the suprahyoid muscles. Its originates from the styloid process of the ; it inserts onto hyoid bone. It is innervated by a branch of the . It acts draw the upwards and backwards.


Structure
The stylohyoid is a . It is directed inferoanteriorly from its origin towards its insertion.
(2025). 9780702077074

It is perforated near its insertion by the intermediate of the .


Origin
The muscle arises from the posterior surface of the temporal styloid process; it arises near the base of the process. It arises by a small tendon of origin.


Insertion
The muscle inserts onto the body of hyoid bone at the junction of the body and .

It passes anterior to the intermediate tendon of the and is inserted immediately superior to that of the superior belly of .


Vasculature
The stylohyoid muscle receives arterial supply branches of the , posterior auricular artery, and .


Innervation
The stylohyoid muscle receives motor innervation from the stylohyoid branch of .


Relations
The muscle is situated to the posterior belly of the .


Variation
It may be absent or doubled. It may be situated medial to the . It may insert suprahyoid muscles of infrahyoid muscles.


Actions/movements
The stylohyoid muscle elevates and retracts the hyoid bone (i.e. draws it superiorly and posteriorly).


Function
The stylohyoid muscle elongates the floor of the mouth. It initiates a swallowing.

==Additional images==


See also
  • Stylohyoid ligament


External links
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