Sternothyroid muscle
Sternothyroid muscle
The Sternothyroid muscle (pronunciation: /ˌstɜːrnoʊˈθaɪrɔɪd ˈmʌsəl/) is a muscle in the anterior neck that plays a crucial role in the movement of the thyroid gland and larynx.
Etymology
The term "Sternothyroid" is derived from the Greek words "sternon" meaning chest and "thyreos" meaning shield, referring to the thyroid gland. The term "muscle" comes from the Latin "musculus" meaning little mouse, due to the muscle's resemblance to a small mouse moving under the skin.
Anatomy
The Sternothyroid muscle is one of the four infrahyoid muscles that are located beneath the hyoid bone. It originates from the posterior surface of the manubrium of the sternum and the first costal cartilage, and inserts into the oblique line of the thyroid cartilage.
Function
The primary function of the Sternothyroid muscle is to depress the larynx and the thyroid cartilage, which is important for swallowing and speech. It is innervated by the ansa cervicalis through the cervical plexus.
Related Terms
- Infrahyoid muscles
- Ansa cervicalis
- Cervical plexus
- Hyoid bone
- Thyroid gland
- Larynx
- Sternum
- Manubrium
See Also
External links
- Medical encyclopedia article on Sternothyroid muscle
- Wikipedia's article - Sternothyroid muscle
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