Sternothyreoideus

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 sternothyroideus
Dorlands /Elsevier	m_22/12550960
TA	A04.2.04.006
FMA	13343
Anatomical terms of muscle []

The Sternothyroideus (or sternothyroid muscle) is a muscle in the neck. It 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.

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

Superficial dissection of the right side of the neck, showing the carotid and subclavian arteries.

The fascia and middle thyroid veins.

Hypoglossal nerve, cervical plexus, and their branches.

Side view of the larynx, showing muscular attachments.

Sternothyroid muscle

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