Sternothyroid muscle

Sternothyroid muscle

Sternothyroid visible center left

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.)
Details
Origin Manubrium
Insertion Thyroid cartilage
Artery Superior thyroid artery
Nerve Ansa cervicalis
Actions Depresses thyroid cartilage
Identifiers
Latin Musculus sternothyreoideus
TA A04.2.04.006
FMA 13343

Anatomical terms of muscle

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

References

This article incorporates text in the public domain from the 20th edition of Gray's Anatomy (1918)


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