Sternothyroid muscle

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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.)
Latin	musculus sternothyroideus
Gray's	subject #112 393
Origin:	manubrium
Insertion:	thyroid cartilage
Artery:
Nerve:	Ansa cervicalis
Action:
Dorlands/Elsevier	m_22/12550960

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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

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.

External links

• LUC sthr
• Photo of model at Waynesburg College musclehead/sternothyroid
• SUNY Labs 25:03-0105 - "The Muscular triangle"
• PTCentral

This article was originally based on an entry from a public domain edition of Gray's Anatomy. As such, some of the information contained herein may be outdated. Please edit the article if this is the case, and feel free to remove this notice when it is no longer relevant.

v • d • e List of muscles of head and neck: the neck
Cervical	CN VII (superficial): platysma CN XI (deep): sternocleidomastoid
Suprahyoid	CN V3 (medial): mylohyoid - anterior belly of digastric CN VII (lateral): stylohyoid - posterior belly of digastric C1 (deep): geniohyoid
Infrahyoid/strap	C1: thyrohyoid C1-C3: sternohyoid - sternothyroid - omohyoid
Vertebral	C1-C6 (anterior): rectus capitis (anterior, lateralis) - longus (capitis, colli) C3-C8 (lateral): scalene (anterior, medius, posterior)

de:Musculus sternothyroideus ja:胸骨甲状筋 sr:Стернотироидни мишић

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Some of the initial content on this page may be incorporated in part from copyleft sources in the public domain including wikis such as Wikipedia and AskDrWiki. Drug information for patients came from the The National Library of Medicine. Infectious disease information may have come from the Centers for Disease Control (CDC). Differential Diagnoses are drawn from clinicians as well as an amalgamation of 3 sources: 1.The Disease Database; 2. Kahan, Scott, Smith, Ellen G. In A Page: Signs and Symptoms. Malden, Massachusetts: Blackwell Publishing, 2004:3; 3. Sailer, Christian, Wasner, Susanne. Differential Diagnosis Pocket. Hermosa Beach, CA: Borm Bruckmeir Publishing LLC, 2002:7 .