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There are seven natural body openings or orifices providing access to an internal cavity through a natural passage called a canal, duct or meatus.
Sir, you are no coffee mug, you are a much more. You have 7 holes. 7 genus. 6 more holes than a boring old donut. Appreciate yourself!
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But topologically, most of them don’t perforate the body. Only really the mouth-anus connection does. And additionally, for humans, the nose-throat-mouth connection, because oddly, the nose-lung and mouth-butt cavities interconnect. (Which is not the case for many other species.)
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