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A body orifice is any opening in the body of an animal.

External

In a typical mammalian body such as the human body, the external body orifices are: * The nostrils, for breathing and the associated sense of smell * The mouth, for eating, breathing, and vocalizations such as speech * The ear canals, for the sense of hearing * The nasolacrimal ducts, to carry tears from the lacrimal sac into the nasal cavity * The anus, for defecation * In males, the urinary meatus, for urination and ejaculation * In females, the urinary meatus, for urination * In females, the vagina, for menstruation, sexual intercourse and childbirth * The nipple orifices Other animals may have some other body orifices: *cloaca, in birds, reptiles, amphibians, and some other animals *siphon in mollusk, arthropods, and some other animals

Internal

Internal orifices include the orifices of the outflow tracts of the heart, between the heart valves.

See also

*Internal urethral orifice *Mucosa *Mucocutaneous boundary *Meatus *Body cavity {{DEFAULTSORT:Body Orifice Category:Anatomy