cloacal aperture


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. 2011.

Look at other dictionaries:

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

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

  • 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


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