Muscle
The stylohyoid muscle is one of the suprahyoid muscles .[1] temporal bone ; it inserts onto hyoid bone. It is innervated by a branch of the facial nerve . It acts draw the hyoid bone upwards and backwards.
Structure
The stylohyoid is a slender muscle .[2] [3]
It is perforated near its insertion by the intermediate tendon of the digastric muscle .[3]
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.[3]
Insertion
The muscle inserts onto the body of hyoid bone at the junction of the body and greater cornu .[3]
The site of insertion is situated immediately superior to that of the superior belly of omohyoid muscle .[3]
Vasculature
The stylohyoid muscle receives arterial supply branches of the facial artery , posterior auricular artery , and occipital artery .[3]
Innervation
The stylohyoid muscle receives motor innervation from the stylohyoid branch of facial nerve (CN VII) .[3]
Relations
The muscle is situated antero superior to the posterior belly of the digastric muscle .[2]
Variation
It may be absent or doubled. It may be situated medial to the carotid artery . It may insert suprahyoid muscles of infrahyoid muscles.[3]
Actions/movements
The stylohyoid muscle elevates and retracts the hyoid bone (i.e. draws it superiorly and posteriorly).[3]
Function
This section needs expansion. You can help by
adding to it . (January 2018)
The stylohyoid muscle elongates the floor of the mouth.[3] [citation needed
This article incorporates text in the public domain from page 392 of the 20th edition of Gray's Anatomy (1918)
^ Chokroverty, Sudhansu (2009-01-01), Chokroverty, Sudhansu (ed.), "Chapter 7 - Physiologic Changes in Sleep" , Sleep Disorders Medicine (Third Edition) , Philadelphia: W.B. Saunders, pp. 80–104, doi :10.1016/b978-0-7506-7584-0.00007-0 , ISBN 978-0-7506-7584-0 , retrieved 2020-11-11 ^ a b Rea, Paul (2016-01-01), Rea, Paul (ed.), "Chapter 2 - Head" , Essential Clinically Applied Anatomy of the Peripheral Nervous System in the Head and Neck , Academic Press, pp. 21–130, doi :10.1016/b978-0-12-803633-4.00002-8 , ISBN 978-0-12-803633-4 , retrieved 2020-11-11 ^ a b c d e f g h i j Standring, Susan (2020). Gray's Anatomy: The Anatomical Basis of Clinical Practice ISBN 978-0-7020-7707-4 OCLC 1201341621 . ((cite book )): CS1 maint: location missing publisher (link ) 
