Infrahyoid Muscles

Original Editor - Manisha Shrestha Top Contributors - Manisha Shrestha

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Introduction[edit | edit source]

Anterior neck showing Infrahyoid muscles

The infrahyoid muscles are a group of four paired muscles that lie inferiorly to the hyoid bone in the anterior aspect of neck. This group of muscles is also known as strap muscles. They connect hyoid, sternum, clavicle and scapula.

Infrahyoid muscles are organised in two layers. Superficial layer consist of sternohyoid and omohyoid whereas deep layer contain sternothyroid and thyrohyoid.

The muscles are involved in movements of the hyoid bone and thyroid cartilage during vocalization, swallowing and mastication.[1]It play an active role in swallowing through the movement of the larynx. They are mainly innervated from the ansa cervicalis.

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