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Sternothyroid
Other Terms:
Musculus sternothyroideus,
Muscle sterno-thyroïdien
Muscle parts
None
Latin name
Musculus sternothyroideus
Latin muscle parts
None
Group
Cervical wall – ventral muscle (Infrahyoid muscle)
Etymology
The English name for this muscle is the muscle of the chest and the hyoid bone. The term sterno comes from the Latin word sternon meaning “breast or chest,” while thyroid is from the Greek term thyreos for “shield” plus the suffix eidos meaning “shape or form.” The Greek word thyreos comes from thyra meaning door and referred to a large, oblong stone that was used as a door. The term thyreos was later used to refer to large oblong shields used by Minoan warriors. The shields covered them from shoulders to feet, with the top of the shield having a notch for the chin. It was this shield that the ancient anatomist Galen envisioned when he named the laryngeal cartilage in the 2nd Century.
Origin
Upper posterior surface of the manubrium of the sternum and the posterior side of the first costal cartilage
Insertion
Oblique line on the lamina of the thyroid cartilage
Action
Depresses the thyroid cartilage.
Nerve supply
Ventral rami via the ansa cervicalis (C1, C2, and C3)
Blood supply
Thyroid ima artery, a variable branch of the brachiocephalic artery (but may also arise from the aorta, right common carotid, or subclavian arteries), infrahyoid artery from the superior thyroid, suprahyoid branch of the lingual artery, inferior thyroid artery from the thyrocervical trunk of the subclavian artery
Latin
Musculus sternothyroideus
French
Muscle sterno-thyroïdien
