描述

Origin: Thyroid cartilage

Insertion: Hyoid bone

Nerve: Posterior interosseous nerve (C7, C8)

Action: Extends index finger, wrist

Description:
The Thyreohyoideus (Thyrohyoid muscle) is a small, quadrilateral muscle appearing like an upward continuation of the Sternothyreoideus. It arises from the oblique line on the lamina of the thyroid cartilage, and is inserted into the lower border of the greater cornu of the hyoid bone.


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