Body orifice
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| + | [[Image:The Big Swallow.jpg|thumb|right|200px|[[Mouth]] [[close-up]] from the film ''[[The Big Swallow]]'' (1901)]] | ||
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| + | A '''body orifice''' is any opening in the body of an animal. | ||
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| + | ==External orifices== | ||
| + | In a typical [[mammal]]ian body such as the [[human body]], the external body orifices are: | ||
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| + | * The [[nostril]]s, for [[breath]]ing and the associated sense of [[olfaction|smell]] | ||
| + | * The [[mouth]], for [[eating]], breathing, and vocalizations such as [[Speech communication|speech]] | ||
| + | * The [[ear canal]]s, for the sense of [[hearing (sense)|hearing]] | ||
| + | * The [[anus]], for [[defecation]] | ||
| + | * The [[urethra]], for [[urination]] and [[ejaculation]] | ||
| + | * In [[female]]s, the [[vagina]], for [[menstruation]], [[sexual intercourse]] and [[childbirth]] | ||
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| + | Other animals may have some other body orifices: | ||
| + | *[[cloaca]], in [[bird]]s, [[reptile]]s, [[amphibians]], and some other animals | ||
| + | *[[Hyponome|siphon]] in [[mollusk]], [[arthropods]], and some other animals | ||
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| + | ==Internal orifices== | ||
| + | Internal orifices include the orifices of the outflow tracts of the heart, between the [[heart valve]]s. | ||
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| + | ==See also== | ||
| + | *[[Bodily fluid]] | ||
| + | *[[Mucosa]] | ||
| + | *[[Mucocutaneous boundary]] | ||
| + | *[[Meatus]] | ||
| + | *[[Cavity]] | ||
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A body orifice is any opening in the body of an animal.
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External orifices
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 anus, for defecation
- The urethra, for urination and ejaculation
- In females, the vagina, for menstruation, sexual intercourse and childbirth
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
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Internal orifices
Internal orifices include the orifices of the outflow tracts of the heart, between the heart valves.
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See also
Unless indicated otherwise, the text in this article is either based on Wikipedia article "Body orifice" or another language Wikipedia page thereof used under the terms of the GNU Free Documentation License; or on research by Jahsonic and friends. See Art and Popular Culture's copyright notice.
