The sternothyroid muscle is an infrahyoid muscle located in the deep plane of the neck underneath the sternohyoid muscle. It has an important role in the movement of the neck.
The attachments of the sternothyroid muscle are very important. It arises from the manubrium of the sternum and attaches to the thyroid cartilage.
The primary action of the sternothyroid muscle is to depress the thyroid cartilage.
The innervation of the sternothyroid muscle is provided by the anterior rami of cervical nerves C1 to C3, which are carried by a branch of the ansa cervicalis.
The sternothyroid muscle is supplied with blood by the superior thyroid artery (a branch of the external carotid artery) and the inferior thyroid artery (a branch of the thyrocervical trunk).
The sternothyroid muscle is an important part of the musculoskeletal system, and is essential for movement of the neck.
The primary action of the sternothyroid muscle is depress the thyroid cartilage, which is part of the laryngeal prominence, commonly known as the Adam's apple. This is necessary to create movement in the neck, allowing for flexibility and range of motion. Without the sternothyroid muscle, the neck would be unable to perform basic and necessary functions.
The sternothyroid muscle is also important for the control of breathing and phonation. Located near the larynx, the muscle can help to regulate the intake and outflow of air. Additionally, the sternothyroid muscle helps to control vocalization. The muscle aids in the closing and opening of the glottis, which helps to produce sound when combined with other structures.
The sternothyroid muscle also plays a role in swallowing. It helps to draw the larynx closer to the trachea, which compresses the walls of the upper esophagus. This action helps to facilitate the passage of food and liquids from the mouth to the stomach.
The sternothyroid muscle is a wide infrahyoid muscle located underneath the sternohyoid in the neck. It has a number of important attachments and actions, including depressing the thyroid cartilage, controlling breathing and phonation, and aiding in swallowing. Without the sternothyroid muscle, the neck would be unable to perform various functions properly, making it an essential component of the musculoskeletal system.
