cloacal aperture

См. также в других словарях:

• cloacal aperture — the opening of the cloaca …   Dictionary of ichthyology

• cloacal aperture — The external opening of the cloaca; the vent …   Dictionary of invertebrate zoology

• cloacal aperture — the posterior opening on the body surface of the cloaca in vertebrates such as birds, reptiles, fish, and amphibians. Called also vent …   Medical dictionary

• Cloaca — A common passageway for feces, urine and reproduction. At one point in the development of the human embryo, there is a cloaca. It is the far end of a structure called the hindgut. This structure then divides to form a rectum, a bladder, and… …   Medical dictionary

• tunicate — /tooh ni kit, kayt , tyooh /, n. 1. Zool. any sessile marine chordate of the subphylum Tunicata (Urochordata), having a saclike body enclosed in a thick membrane or tunic and two openings or siphons for the ingress and egress of water. adj. Also …   Universalium

• intestine — often used for most of the gut of fishes as many lack a stomach, although strictly that stretch from the stomach, when present, to the cloacal aperture …   Dictionary of ichthyology

• vent — An opening into a cavity or canal, especially one through which the contents of such a cavity are discharged, as the anus. [O. Fr. fente, a chink, cleft] * * * ventilation; ventral; ventricle, ventricular * * * vent vent …   Medical dictionary

• reproductive system, animal — Introduction       any of the organ systems by which animals reproduce.       The role of reproduction is to provide for the continued existence of a species; it is the process by which living organisms duplicate themselves. Animals compete with… …   Universalium

• To give vent to — Vent Vent, n. [OE. fent, fente, a slit, F. fente a slit, cleft, fissure, from fendre to split, L. findere; but probably confused with F. vent wind, L. ventus. See {Fissure}, and cf. Vent to snuff.] 1. A small aperture; a hole or passage for air… …   The Collaborative International Dictionary of English

• To take vent — Vent Vent, n. [OE. fent, fente, a slit, F. fente a slit, cleft, fissure, from fendre to split, L. findere; but probably confused with F. vent wind, L. ventus. See {Fissure}, and cf. Vent to snuff.] 1. A small aperture; a hole or passage for air… …   The Collaborative International Dictionary of English

• Vent — Vent, n. [OE. fent, fente, a slit, F. fente a slit, cleft, fissure, from fendre to split, L. findere; but probably confused with F. vent wind, L. ventus. See {Fissure}, and cf. Vent to snuff.] 1. A small aperture; a hole or passage for air or any …   The Collaborative International Dictionary of English