Natural ones are called orifices. Artificial ones are called stomas.
serous membrane
It is the tissue that lines the great cavities of the body that have no openings to the outside. Aneisha
Ostia are openings into the heart in an open circulatory system that allow body fluids to return to the heart.
The human body has one pair of lips. Females however have two.
Reptiles have 2 body openings. Mouth and an anus.
maize
There are openings once every three to five years.
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The famous animal the "Porifera", has 6 body openings.
All hamsters have 2 openings between their back legs. Females have openings that are very close together and almost look like one openings. Males have openings that are about 5 to 10 millimeters apart.
The male human body has two openings for the removal of waste products and for sexual reproductive purposes. The Female has three; however these would be considered major openings, whereas if you consider minor or microscopic openings (pores, sweat glands etc.) the number would be astronomical. There are three holes in a female: the anus for passing solid waste ("poo"), the opening of the urethra to pass urine ("pee"), and the opening of the vagina for sexual intercourse and childbirth.
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