Sternohyoid muscle
Table of Contents
Introduction
The sternohyoid muscle is a flat muscle located on both sides of the neck.
The sternohyoid muscle is a strap-like infrahyoid muscle that connects the hyoid bone with the clavicle and sternum.
Along with the omohyoid muscle, it comprises the superficial plane of infrahyoid muscles, while the sternothyroid and thyrohyoid muscles belong to the deep layer. The function of the sternohyoid muscle is to reestablish the breathing process by pulling the hyoid bone and larynx inferiorly after deglutition.
Origin
The sternohyoid muscle originates from the Manubrium of the sternum, the medial end of the clavicle
Insertion
The sternohyoid muscle inserted on the Inferior border of the body of the hyoid bone
Nerve supply
The nerve supply of the sternohyoid muscle is the Anterior rami of spinal nerves C1 to C3 (via ansa cervicalis)
Blood supply
The blood supply of the sternohyoid muscle is the Superior thyroid artery
Action
Depression of the hyoid bone (from an elevated position)
Clinical Significance of the sternohyoid muscle
The sternohyoid muscle has implications for pathologies affecting the neck areas. It has been difficult for health care providers to differentiate the causes of anterior neck pain or swellings. Since the sternohyoid muscle is one of the structures located in the anterior neck region, it could be a possible cause to neck pain or swelling.
In sternohyoid muscle syndrome, there is a mass present in the lateral neck areas that disappears with swallowing. Classically this condition is caused by omohyoid muscle syndrome, but research has found that the sternohyoid muscle may also be the cause of the swelling.
Exercise for the sternohyoid muscle
Neck flexion and extension
Arch the neck slowly forward, then up and backward. Make sure to perform the exercises slowly. Make sure the torso and shoulder should be relaxed. slowly Inhale and exhale throughout the duration of the session. The stop is something that doesn’t feel right or it begins to pain. The exercise can be performed anywhere. Complete 10 repetitions of the exercise.
FAQ
The hyoid bone is joined to the clavicle and sternum by the infrahyoid muscle known as the Sternohyoid. The deep layer of infrahyoid muscles includes the sternothyroid and thyrohyoid, while the superficial plane includes the omohyoid muscle.
This group of muscles’ main function during speech and swallowing is to depress the hyoid bone.
An infrahyoid muscle in the neck is called the sternohyoid. It and the omohyoid muscle are both found in the superficial plane of the neck. Attachments: sternum and the sternoclavicular joint are where it originates.
Sternohyoid’s first root word, “sterno,” refers to the sternum, while “hyoid,” the last root word, refers to the hyoid bone. This muscle’s name is straightforward because it describes the places from where it arises and to which it attaches.
