"The omohyoid muscle is an infrahyoid muscle of the neck that is innervated by the ansa cervicalis of the cervical plexus receiving fibres from the ventral rami of C1–C3 spinal nerves. The omohyoid is a paired, flat strap of muscle that is made up of superior and inferior bellies joined by an intermediate tendon. The primary function of the omohyoid muscle is to depress and fix the hyoid bone and underlying larynx though it also draws the hyoid bone downwards in phonation and in the terminal phase of swallowing."
"innervation: anterior rami of C1–C3 spinal nerves from the cervical plexus; the superior and inferior bellies are innervated by separate nerves of the ansa cervicalis"
"omohyoid muscle is supplied by the anterior rami of C1–C3 spinal nerves from the cervical plexus"
"origin: transverse scapular ligament and superior border of scapula medial to the suprascapular notch"
"insertion: lateral and inferior border of the hyoid bone"
"innervation: anterior rami of C1–C3 spinal nerves from the cervical plexus; the superior and inferior bellies are innervated by separate nerves of the ansa cervicalis"
"action:"
"significant variations in the origin and insertion of the muscle have also been reported in a number of case series likely related to the embryology of the muscle, which is first attached in the fetus to the medial end of the clavicle. The process of migration of the muscle to the superior aspect of the scapula may be arrested at any point."
Expected headings
"Origin"
"Insertion"
"Action"
"Etymology"
"innervation: anterior rami of C1–C3 spinal nerves from the cervical plexus; the superior and inferior bellies are innervated by separate nerves of the ansa cervicalis"