A pore, in general, is some form of opening, usually very small.
In biology:
For skin, a pore is an opening into a sebaceous gland that secretes oil to lubricate and protect the surface of the skin
In plants, pores, or stoma, exist in leaves in order to aid in photosynthesis and respiration
Other organic substances are porous, and they can be very light, such as wood and the bones of some birds
In cell biology:
Pores formed by proteins called aquaporins are used to facilitate the movement of water in and out of cells by means of osmosis
Ion channels contain pores to allow ions to pass through the cell's plasma membrane into or out of the cell
In the Earth sciences:
The measure of pores in a rock or unconsolidated material is porosity
Pores are also referred to as void spaces, or voids
2007-03-26 13:41:59
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answer #1
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answered by ♥!BabyDoLL!♥ 5
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They are little tiny holes in your skin to let them breathe (thats in easier terms, not necessarily human anatomy)
2007-03-26 21:08:00
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answer #2
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answered by Anonymous
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