hyoid muscle interhyoideus One of the principal muscles used in swallowing.[AAO] relationship loss: subclass hyobranchial muscles (AAO:0000224)[AAO] UBERON:0010930 interhyoideus muscle most extant actinopterygians part of the interhyoideus separates into a distinct muscle during development, the hyohyoideus - http://www.biomedcentral.com/1471-213X/8/24/ may be obsoleted. Muscle between hyoid arches in fish; the [mammalian] interhyoideus is homologous with the simple interhyoideus of early stages of amphibia[Edgeworth, 1935] AAO:0010649