Transversus thoracis muscle, also known as the transversus thoracis muscle of the neck, is a small, thin muscle located in the neck and upper thoracic region of the body. It is one of the muscles of the deep cervical group, which also includes the rectus capitis posterior major and minor, obliquus capitis superior, and obliquus capitis inferior muscles.
Structure
The transversus thoracis muscle is a flat, triangular muscle that originates from the posterior surface of the transverse processes of the upper six thoracic vertebrae. It inserts into the anterior surface of the first four ribs, just below the costal cartilage. The muscle is supplied by the cervical plexus and is innervated by the spinal nerves C2 to C4.
Location
The transversus thoracis muscle is located in the neck and upper thoracic region, just below the posterior border of the sternocleidomastoid muscle. It is situated between the obliquus capitis superior muscle above and the rectus capitis posterior major muscle below.
Anatomy
The transversus thoracis muscle is a small, thin muscle that is composed of parallel, vertically oriented fibers. It is located deep to the sternocleidomastoid muscle and is covered by the posterior triangle of the neck. The muscle is separated from the surrounding muscles by the prevertebral fascia.
Function
The main function of the transversus thoracis muscle is to assist in the movement of the head and neck. It works in conjunction with the other muscles of the deep cervical group to provide stability and support to the head and neck.
The transversus thoracis muscle also plays a role in respiratory function by helping to lift and expand the rib cage during inhalation.
Clinical Significance
Injury to the transversus thoracis muscle can result in neck and upper back pain, as well as difficulty moving the head and neck. This muscle is also at risk of strain and overuse in individuals who engage in activities that require repetitive neck movements, such as computer work or playing musical instruments.
The transversus thoracis muscle may also be affected by conditions such as muscle spasms or tension headaches. In these cases, treatment may involve stretching and strengthening exercises, as well as medications or other therapies to reduce muscle spasms and tension.
Overall, the transversus thoracis muscle is an important muscle that plays a vital role in the movement and stability of the head and neck. It is important to maintain the health and function of this muscle to prevent pain and discomfort in the neck and upper back.
