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