What is the function of the omohyoid muscle?

What is the function of the omohyoid muscle?

The primary function of the omohyoid muscle is to depress and fix the hyoid bone and underlying larynx though it also draws the hyoid bone downwards in phonation and in the terminal phase of swallowing.

What is OMO in omohyoid?

The name “omohyoid” derives from the Greek “omos” meaning shoulder, giving one of its attachments, and “hyoid”, giving the other attachment – the hyoid bone.

What is the function of the omohyoid and sternohyoid muscles?

It belongs to a group of muscles called infrahyoid muscles, along with three others: sternohyoid, sternothyroid and thyrohyoid. The function of this muscle is to depress the hyoid bone and larynx and reestablish breathing following the act of swallowing.

Is omohyoid an Infrahyoid muscle?

Infrahyoid muscles: Together, the infrahyoid muscles play an active role in swallowing through the movement of the larynx. The omohyoid, sternohyoid, and thyrohyoid act to depress the hyoid bone. The thyrohyoid elevates the larynx whereas the sternothyroid depresses the larynx.

Why is it called omohyoid muscle?

The omohyoid muscle originates from the top of the scapula, which is the official name for the shoulder blade. From the top of the scapula, this muscle then extends up the neck and attaches to the bottom part of the hyoid bone. This muscle gets its name from the words omos and hyoid.

Which nerve supply the omohyoid muscle?

The omohyoid muscle is an infrahyoid muscle of the neck that is innervated by the ansa cervicalis of the cervical plexus receiving fibers from the ventral rami of C1–C3 spinal nerves.

What does Omohyoid mean in medical terms?

: of or relating to the shoulder and the hyoid bone.

What artery supplies the Omohyoid?

The hyoidal attachments of the sternohyoid and omohyoid muscles are supplied by the hyoid artery, as is the whole thyrohyoid muscle. The hyoid artery arises either directly from the STA or secondarily from its superior laryngeal branch.

What artery supplies the omohyoid?

Which nerve Innervates infrahyoid muscles?

Innervation: Anterior ramus of C1, carried within the hypoglossal nerve.

What are considered infrahyoid muscles?

The infrahyoid muscles or strap muscles are a group of four paired muscles in the anterior neck below the hyoid bone, within the muscular triangle. They are responsible for depressing the hyoid during swallowing. These muscles can be remembered by the mnemonic “TOSS”.

Does the Omohyoid elevate the hyoid bone?

The stylohyoid muscle moves the hyoid bone posteriorly, elevating the larynx, and the mylohyoid muscle lifts it and helps press the tongue to the top of the mouth. The geniohyoid depresses the mandible in addition to raising and pulling the hyoid bone anteriorly.

What are the functions of the omohyoid muscle?

Omohyoid muscle 1 Origin and insertion. The narrow flat omohyoid muscle consists of two bellies, an inferior and a superior belly, joined by an intermediate tendon; similar to the digastric muscle. 2 Relations. 3 Innervation. 4 Blood supply. 5 Function.

Where does the omohyoid inferior belly muscle come from?

The omohyoid muscle is a digastric structure with an inferior belly originated in the scapula, a central tendon and a superior belly that inserts in the inferior border of the hyoid bone.

Where is the omohyoid located in the neck?

Kim Bengochea, Regis University, Denver Omohyoid is a paired muscle located in the anterior region of the neck. It belongs to a group of muscles called infrahyoid muscles, along with three others: sternohyoid, sternothyroid and thyrohyoid .

Are there any flaps for the omohyoid muscle?

Several descriptions on the use of the infrahyoid muscles for reconstruction of the tongue, larynx, esophagus and the vocal cords have been published, however it should be noted that most surgeons avoid the inclusion of the inferior belly of the omohyoid muscle in their flaps due to its distance from the site to be reconstructed [ 5 – 10].