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The sternothyroid muscle (or sternothyroideus) is an infrahyoid muscle of the neck. [1] ... The upward extension of a thyroid swelling is prevented by the attachment ...
It follows a variable course either superficial or deep to the sternothyroid muscle. If superficial, it may be accompanied by branches of the ansa cervicalis, and if deep, it may be related to the external laryngeal nerve. It can connect with the artery of the opposite side and with the laryngeal arteries.
Muscle Origin Insertion Innervation Sternohyoid: Posterior surface of manubrium sterni, adjoining parts of clavicle and the posterior sternoclavicular ligament: Medial part of lower border of hyoid bone: Ansa cervicalis: Sternothyroid: Posterior surface of manubrium sterni and adjoining part of first costal cartilage: Oblique line of thyroid ...
The most posterior part of the cartilage also has two projections upwards and downwards. The upper projection is called the superior horn (cornu), and the lower is called the inferior horn. The superior horn is long and narrow, backward, and medialward, and ends in a conical extremity, which gives attachment to the lateral thyrohyoid ligament.
The sternohyoid muscle is a bilaterally paired, [1] long, [1] thin, [1] [2] narrow strap muscle [2] of the anterior neck. [1] It is one of the infrahyoid muscles. It is innervated by the ansa cervicalis. It acts to depress the hyoid bone. The sternohyoid muscle is a flat muscle located on both sides of the neck, part of the infrahyoid muscle group.
Edema (American English), also spelled oedema (British English), and also known as fluid retention, dropsy and hydropsy, is the build-up of fluid in the body's tissue, [1] a type of swelling. [4] Most commonly, the legs or arms are affected. [ 1 ]
In the early morning hours of Dec. 26, 1996, Patsy Ramsey called 911 to report her 6-year-old daughter JonBenét missing, and found a rambling ransom note left inside their Boulder, Colorado, home.
The duct continues in front of the thyrohyoid membrane, sternothyroid muscle, and sternohyoid muscle, before terminating in the inferior segment of the neck at the thyroid. [ 4 ] Failures of duct removal surgeries have proven that the suprahyoid region of the duct can have many microscopic branches that connect to the base of the tongue.