delicate crescent-shaped mucosal folds that pass between the lower ends of neighboring anal columns; the small pocket thus formed is an anal sinus. Syn: valvulae anales [NA], Morgagni’s valves.
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delicate crescent-shaped mucosal folds that pass between the lower ends of neighboring anal columns; the small pocket thus formed is an anal sinus. Syn: valvulae anales [NA], Morgagni’s valves.