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15 Cards in this Set
- Front
- Back
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cells
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basic functional and structural living units and no matter how differentiated they become they all exhibit the fundamental activities common to all forms of life
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cell function
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transport
metabolism growth and differentiation movement hereditary transmission detect and respond- cell signaling |
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extracellular fluid
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the fluid which bathes each cell in the body
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homeostasis
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maintenance of constant conditions in the internal environment
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control systems often show
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hierarchical control
redundancy competition between systems |
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intracellular fluid % body weight
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40% of body weight
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extracellular fluid % body weight
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20% body weight
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extracellular fluid compartments
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blood plasma
interstitial fluid and lymph bone and dense connective tissue special fluid systems |
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osmosis
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water moves from areas of higher solute concentration and lower water concentration
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osmotic pressure
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amount of pressure required to stop osmotic water movement
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osmolarity
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total number of solute particles dissolved in a liter of solution
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tonicity
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tendency of a solution to resist expansion of cells intracellular volume
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isotonic
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no water movement occurs
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hypertonic
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high concentration outside
cell collapses |
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hypotonic
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low concentration outside
cell expands - hemolysis |
