Everything about the Sternohyoid Muscle totally explained
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's 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
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.
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