Unilateral absence of the sternothyroid muscle : a case report
نویسندگان
چکیده
Introduction The infrahyoid (strap) muscles act on the thyroid cartilage of the larynx and the hyoid bone to function in speech, swallowing and mastication. The infrahyoid group consists of four paired muscles: sternohyoid, sternothyroid, omohyoid and thyrohyoid. The infrahyoid muscles are hypaxial derivatives, formed by moyblasts of cervical myotomes. The omohyoid consists of superior and inferior bellies joined by an intermediate tendon, while sternohyoid, sternothyroid and thyrohyoid have one muscle belly. The sternothyroid muscle is innervated by the ansa cervicalis and its blood supply is from the superior thyroid artery. Here we report a unilaterally absent sternothyroid muscle that was noted during cadaveric dissection as part of chiropractic education.
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Address for Correspondence: Dr. Prabhas Ranjan Tripathy, Assistant Professor, Department of Anatomy, All India Institute of Medical sciences, Bhubaneswar, Odisha, India. Mob. +919861187082 E-Mail: [email protected] *1 Assistant Professor, Department of Anatomy, All India Institute of Medical sciences, Bhubaneswar, Odisha, India. 2 Assistant Professor, Department of ENT & HNS, All India ...
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