The mylohyoid muscle has several functions in relation to respiration, deglutition, and phonation, but these functions are not fully understood. The interaction of the mylohyoid nerve and muscle in 25 rats was studied by neurophysiologic and histologic methods. Stretching of the muscle elicited electrical responses from the branch of the mylohyoid nerve innervating the mylohyoid muscle, and stretch-sensitive receptors were demonstrated histologically in the mylohyoid muscle. This study indicates that the mylohyoid muscle plays an active role in functions such as swallowing, breathing, and phonation.
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