hyobranchial cleft

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• hyobranchial cleft — second pharyngeal groove; see pharyngeal grooves, under groove …   Medical dictionary

• cleft — A fissure. anal c. SYN: intergluteal c.. branchial clefts a bilateral series of slitlike openings into the pharynx through which water is drawn by aquatic animals; in the walls of the clefts are the vascular gill filaments that …   Medical dictionary