Upper airway dilator muscle

The upper airway dilator muscles are a group of skeletal muscles in the pharyngeal and oral region—including the genioglossus (the most important member), levator palatini, tensor palatini, geniohyoid, and stylopharyngeus—which contract to maintain airway openness, particularly during inspiration[2][3][6][7]. These muscles are vital for preventing airway collapse, especially during sleep, and are critically involved in the pathophysiology of obstructive sleep apnea when their activity is diminished[2][3][5][7]. Their contraction is coordinated via neural reflexes that respond rapidly to negative airway pressure, with the genioglossus muscle innervated primarily by the hypoglossal nerve[1][3]. While the upper airway dilator muscles are essential in respiratory physiology and sleep medicine, they do not represent a classical drug target such as a receptor or enzyme, being instead a functional and anatomical category[3][4][7].

Other names

Upper airway musclespharyngeal dilator musclesUA dilators

Not applicable (these are anatomical and physiological structures, not molecular targets; interventions aim to increase muscle tone via neural or device-based approaches rather than direct "molecule-receptor" mechanisms)