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Thyrohyoid
Other Terms:
Musculus thyrohyoideus,
Muscle thyro-hyoïdien
Muscle parts
None
Latin name
Musculus thyrohyoideus
Latin muscle parts
None
Group
Cervical wall – ventral muscle (Infrahyoid muscle)
Etymology
In English, this muscle’s name is the muscle of the shield-like cartilage and the U-shaped bone. The term thyro is from the Greek term thyreos for “shield.” 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. The term hyoid comes from its resemblance to the Greek letter upsilon (u), which is aspirated as hy. This is combined with the suffix eidos meaning “shape or form.”
Origin
Oblique line on the lamina of the thyroid cartilage
Insertion
Inferior border of the greater cornu and adjacent hyoid body
Action
Depresses the unfixed hyoid bone, when the hyoid is fixed it elevates the thyroid cartilage.
Nerve supply
Ventral ramus via the hypoglossal nerve (C1)
Blood supply
Infrahyoid artery and superior laryngeal artery from the superior thyroid artery, suprahyoid branch of the lingual artery, inferior thyroid artery from the thyrocervical trunk of the subclavian artery
Latin
Musculus thyrohyoideus
French
Muscle thyro-hyoïdien
