The function of the ventral velum during gill irrigation in Rana catesbeiana.
D000818:Animals; D001001:Anura / Q000196:embryology / Q000502:physiology*; D005880:Gills / Q000196:embryology / Q000502:physiology*; D008168:Lung / Q000196:embryology / Q000502:physiology*; D012119:Respiration