Sternohyoid muscle
Sternohyoid Muscle
The Sternohyoid Muscle (pronounced: stur-noh-hy-oid muhs-uhl) is a thin, narrow muscle attached to the hyoid bone and sternum, situated in the anterior aspect of the neck.
Etymology
The term "Sternohyoid" is derived from the Greek words "sternon" meaning chest and "hyoeides" meaning shaped like the letter upsilon; it refers to the muscle's attachments to the sternum and hyoid bone.
Anatomy
The Sternohyoid Muscle is one of the four infrahyoid muscles, the other three being the Sternothyroid, Thyrohyoid, and Omohyoid. It originates from the posterior surface of the manubrium sterni and the sternoclavicular articulation. It inserts into the body of the hyoid bone.
Function
The primary function of the Sternohyoid Muscle is to depress the hyoid bone, which is essential during swallowing and speaking. It works in conjunction with the other infrahyoid muscles to stabilize the hyoid bone, allowing the suprahyoid muscles to open the mouth without displacing the bone.
Clinical Significance
Anomalies or injuries to the Sternohyoid Muscle can lead to difficulties in swallowing, known as dysphagia, and speech problems. It may also be involved in conditions such as Eagle's Syndrome and goitre.
Related Terms
External links
- Medical encyclopedia article on Sternohyoid muscle
- Wikipedia's article - Sternohyoid muscle
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