These structures cross deeper into the posterior belly of the digastric muscle. Also closely relating to the posterior belly is the neurovascular bundle of the neck, which contains the internal jugular vein, external & internal carotid arteries, & vagus, & glossopharyngeal & hypoglossal nerves. Later it crosses through this same muscle. As the posterior belly of the digastric diverges towards the hyoid bone, it runs closely besides (posterior) the stylohyoid muscle.It is derived from the Greek word “dis” meaning double or twofold, and Latin “gaster” meaning belly, which perfectly describes the composition of this muscle as having 2 muscle bellies. Another hint about the digastric muscle is found in its own name.As the name suprahyoid says, these muscles are located superior to the hyoid bone, & together with the adjacent tissue, they create the floor of the mouth. Behind the digastric, this group also has the mylohyoid, geniohyoid, & stylohyoid muscles. It relates to a group of muscles known as the suprahyoid muscles. The Digastric is a small paired muscle situated in the anterior compartment of the neck.They are in pairs of 4 present on each side of the midline of the neck, name as follows ĭigastric Muscle What is Digastric Muscle? The supra-hyoid muscles are between the 2 bony landmarks, the base of the mandible above, & the hyoid bone below.The suprahyoid muscles activate in improving the flexion movement of the neck. Moreover, combine with the infrahyoid muscles, they contribute to the stabilization of the hyoid bone, which does not join with any other bone. Those muscles which are above the hyoid bone are termed supra-hyoid muscles, & those below it are known as infra-hyoid muscles. This group of muscles takes part in the processes of chewing, swallowing, & phonetics. One of the classifications of the muscles of the neck is significant to the hyoid bone. There are numerous muscles in the neck.Resisted digastric jaw protrusion exercise.Clinical Significance of Suprahyoid Muscles.
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