What does the Sternothyroid muscle do?
The sternothyroid is a paired, flat strap of muscle that serves to fix the hyoid bone as well as depressing the larynx in phonation and in the terminal phase of swallowing.
What is the sternohyoid muscle?
As for the sternohyoid muscle, it is a flat muscle located on both sides of the neck. This muscle originated from the medial edge of the clavicle bone, sternoclavicular ligament, and posterior side of the manubrium. The sternohyoid muscle then ascends the neck and attaches to the body of the hyoid bone.
What is the function of sternohyoid muscle?
Function. The action of the sternohyoid muscle is to depress the hyoid bone after it has been elevated by the suprahyoid muscles. The elevation of the hyoid bone and thus the larynx, happens during swallowing. This action closes the airways, preventing the food from being inhaled.
What nerve controls the sternohyoid?
The sternohyoid 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 is Sternothyroid?
Medical Definition of sternothyroid : an infrahyoid muscle on each side of the body below the sternohyoid that arises from the sternum and from the cartilage of the first and sometimes of the second ribs, inserts into the thyroid cartilage, and acts to draw the larynx downward by depressing the thyroid cartilage.
What muscle is lateral to the sternohyoid?
The sternohyoid muscle is a thin, narrow muscle attaching the hyoid bone to the sternum. It is one of the paired strap muscles of the infrahyoid muscles….
| Sternohyoid muscle | |
|---|---|
| Muscles of the neck. Lateral view. Sternohyoid muscle labeled | |
| Details | |
| Origin | manubrium of sternum |
| Insertion | hyoid bone |
What is the origin and insertion of the Sternothyroid?
Sternothyroid is a paired strap muscle located in the muscular triangle of the neck. It is a part of a group of muscles called the infrahyoid muscles….Sternothyroid muscle.
| Origin | Posterior surface of manubrium of sternum, Costal cartilage of rib 1 |
|---|---|
| Insertion | Oblique line of thyroid cartilage |
| Action | Depress the larynx |
What is sternothyroid?
What is the insertion of sternohyoid?
The sternohyoid muscle is a thin, narrow muscle attaching the hyoid bone to the sternum….
| Sternohyoid muscle | |
|---|---|
| Origin | manubrium of sternum |
| Insertion | hyoid bone |
| Artery | superior thyroid artery |
| Nerve | C1-C3 by a branch of ansa cervicalis |
Does the sternohyoid elevate the larynx?
The omohyoid, sternohyoid, and thyrohyoid act to depress the hyoid bone. The thyrohyoid elevates the larynx whereas the sternothyroid depress the larynx.
Where is sternohyoid?
The sternohyoid muscle is one of the paired strap muscles of the infrahyoid muscles. It arises from the posterior border of the medial end of the clavicle, the posterior sternoclavicular ligament, and the upper and posterior part of the manubrium of the sternum.
Why is it called Sternothyroid?
The sternothyroid muscle, or sternothyroideus, is an infrahyoid muscle in the neck. It acts to depress the hyoid bone….
| Sternothyroid muscle | |
|---|---|
| Origin | Manubrium |
| Insertion | Thyroid cartilage |
| Artery | Superior thyroid artery |
| Nerve | Ansa cervicalis |