...Ariel L. Camp; Aaron M. Olsen; L. Patricia Hernandez; Elizabeth L. Brainerd ABSTRACT Some fishes rely on large regions of the dorsal (epaxial) and ventral (hypaxial) body muscles to power suction feeding. Epaxial and hypaxial muscles are known to act as motors, powering rapid mouth expansion...

... the sternohyoid, shortening against an immobile pectoral girdle to retract the hyoid, and the hypaxial muscles, shortening to retract both the pectoral girdle and hyoid, could contribute ventral expansion power. To determine whether hypaxial muscles generate power for ventral expansion, and the rostrocaudal...

... the muscle and between successive myosepta, the muscle fibers run in a more or less sagittal direction( Francis, 1934 ). The fibers of the dorsalis trunci muscle are also referred to as intermyoseptal fibers( Auffenberg, 1959 ). The subvertebral muscles make up the bulk of the hypaxial muscle mass...