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8 Cards in this Set

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  • Back
Diffusion
The movement of molecules or ions from a region where they are in high concentration to where their concentration is lower.
Osmosis
The passage of water from a region of high water potential to a region where its water potential is lower through a partially permeable membrane.
Active Transport
movement of a substance from a region where it is in a high concentration, the process requires the expenditure of metabolic energy.
Arteries
Carry blood away from the heart and into arterioles.
Arterioles
Smaller arteries that control blood flow from arteries to capillaries.
Capillaries
Tiny vessles that link arterioles to veins.
Veins
Carry blood from capillaries back to the heart.
Water potential
The pressure created by water molecules - the greater the number of water molecules present, the higher the water potential.