Thyrohyoid

Anatomy

Origin:
Oblique line on lamina of thyroid cartilage.

Insertion:
Body of hyoid bone.

Key Relations:
-Is one of the infrahyoid muscles (sometimes referred to as ‘strap muscles’) lying in the muscular triangle of the neck.
-Lies deep to omohyoid and sternohyoid.

Functions

-Depresses the hyoid bone.
-When hyoid is fixed, raises the larynx e.g. when high notes are sung..

Supply

Nerve Supply:
Anterior ramus of C1 (travels with the hypoglossal nerve CN 12).

Blood Supply:
Superior thyroid artery.

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