Sternohyoid muscle
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2008-06-26T08:18:30Z
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{{Muscle infobox |
Name = Sternohyoid muscle |
Latin = musculus sternohyoideus |
GraySubject = 112 |
GrayPage = 393 |
Image = Sternohyoid muscle.PNG |
Caption = Muscles of neck. Sternohyoideus labeled at middle, just to the right of thyroid cartilage. |
Image2 = Sternohyoideus.png |
Caption2 = Muscles of the neck. Lateral view. Sternohyoid muscle labeled |
Origin = [[manubrium]] of [[sternum]] |
Insertion = [[hyoid bone]] |
Action = [[Depression (kinesiology)|depresses]] hyoid |
Blood = |
Nerve = [[ansa cervicalis]] |
DorlandsPre = m_22 |
DorlandsSuf = 12550951 |
}}
The '''sternohyoid muscle''' is a thin, narrow muscle attaching the [[hyoid bone]] to the [[sternum]], one of the paired [[strap muscles]] of the [[infrahyoid muscles]] serving to depress the hyoid bone. It is innervated by the [[ansa cervicalis]].
The muscle arises from the posterior border of the medial end of the [[clavicle]], the [[posterior sternoclavicular ligament]], and the upper and posterior part of the [[manubrium sterni]].
Passing upward and medially, it is inserted by short tendinous fibers into the lower border of the body of the [[hyoid bone]].
==Variations==
Doubling; accessory slips (Cleidohyoideus); absence.
It sometimes presents, immediately above its origin, a transverse tendinous inscription.
==Additional images==
<gallery>
Image:Gray116.png|Posterior surface of sternum.
Image:Gray201.png|Left clavicle. Inferior surface.
Image:Gray186.png|Hyoid bone. Anterior surface. Enlarged.
Image:Gray384.png|Section of the neck at about the level of the sixth cervical vertebra.
Image:Gray390.png|Posterior surface of sternum and costal cartilages, showing Transversus thoracis.
Image:Gray562.png|The fascia and middle thyroid veins. The veins here designated the inferior thyroid are called by Kocher the thyroidea ima.
</gallery>
==External links==
* {{MuscleLoyola|steh}}
* {{SUNYAnatomyLabs|25|10|01|03}} - "Nerves and Vessels of the [[Carotid triangle]]"
* {{eMedicineDictionary|sternohyoid+muscle}}
* [http://www.ptcentral.com/muscles/musclehead.html#sternohyoid PTCentral]
{{Gray's}}
{{Muscles_of_neck}}
{{muscle-stub}}
[[de:Musculus sternohyoideus]]
[[hr:Prsnopodjezični mišić]]
[[id:Otot sternohyoideus]]
[[ja:胸骨舌骨筋]]
[[pl:Mięsień mostkowo-gnykowy]]
[[sr:Стернохиоидни мишић]]