Infrahyoid

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Related to Infrahyoid muscles: thyroid gland, Strap muscles

In`fra`hy´oid


a.1.(Anat.) Same as Hyosternal (a).
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Relationship between the electrical activity of suprahyoid and infrahyoid muscles during swallowing and cephalometry.
The electrodes were attached to the surface of the muscle belly of the submental muscles (SMs) (on both sides of the midline of the neck, between the submental border and the hyoid bone) and the infrahyoid muscles (IMs) (approximately 2 cm below the hyoid bone on both sides of the midline of the neck).
downward and backward movement to increased inframandibular soft tissue tension (supra/ infrahyoid muscles and fascia).
The hypoglossal nerve is the twelfth cranial nerve, and is a pure motor nerve that is involved in the movements of the tongue and infrahyoid muscles. Hypoglossal nerve palsy induces palsy in the ipsilateral lingual muscles, causing tongue deviation and articulation disorder.
Infrahyoid muscles are reflected downward exposing the superior half of the thyroid lamina (black arrow), and an inferiorly based thyroid perichondrial flap is created (white arrow).
Various anomalous suprahyoid and infrahyoid muscles have been reported in the literature e.g.
With the animal in the supine position after a vertical midline cervicotomy, the infrahyoid muscles were separated from the tracheal axis.
Finally, infrahyoid muscles, represented by esternohyoideous, pull the hyoid bone inferiorly and subsequently providing their return to resting position characterizing the end of swallowing [31,32].
An incision lengthed about 5-8 cm was made two fingerbreadths from the suprasternal notch to cut open the skin and subcutaneous tissues, and to separate loose connective tissues of bilateral sternocleidomastoid muscles and infrahyoid muscles until the upper and lower planes of side thyroid lobes.
It is commonly associated with the poor development of the articular fossa, laxity of the temporomandibular ligament or joint capsule, and excessive activity of the lateral pterygoid and infrahyoid muscles due to drug use or disease.
It can be unilateral or bilateral more frequently arising from the left lobe it can be Glandular, Fibrous, Fibro-muscular with one or two or three slips, it is thought to represent the detached part of infrahyoid muscles, may be innervated by a twig from ansa cervicalis.