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Sternothyreoidei: Wikis

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Sternothyroid muscle
Sternothyroideus.png
Sternothyroid visible center left
Gray384.png
Section of the neck at about the level of the sixth cervical vertebra. Showing the arrangement of the fascia coli. (Sternothyroideus labeled at right, third from top.)
Latin musculus sternothyroideus
Gray's subject #112 393
Origin manubrium
Insertion    thyroid cartilage
Artery
Nerve Ansa cervicalis
Actions [depresses thyroid cartilage]

The Sternothyreoideus (or Sternothyroid muscle) is shorter and wider than the Sternohyoideus, beneath which it is situated.

It arises from the posterior surface of the manubrium sterni, below the origin of the Sternohyoideus, and from the edge of the cartilage of the first rib, and sometimes that of the second rib, it is inserted into the oblique line on the lamina of the thyroid cartilage.

This muscle is in close contact with its fellow at the lower part of the neck, but diverges somewhat as it ascends; it is occasionally traversed by a transverse or oblique tendinous inscription.

Variations

Doubling; absence; accessory slips to Thyreohyoideus, Inferior constrictor, or carotid sheath.

Additional images

External links

This article was originally based on an entry from a public domain edition of Gray's Anatomy. As such, some of the information contained within it may be outdated.

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