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15 Cards in this Set
- Front
- Back
- 3rd side (hint)
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Homeostasis |
A state of balance in the body |
Stability |
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Things the body needs to be constant |
Blood pressure Blood temperature Blood PH O2 & CO2 concentration Osmoregulation OsmoregulationBlood glucose Blood glucose |
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Osmoregulation |
Water balance - regulates body fluids |
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Porcesses and activities thatvheld to maintain Homeostasis |
Homeostatic mechanisms |
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For multicellular organisms its more complicated |
A stable internal environment must be maintained, even in the face of sudden changes in external conditions |
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When your cold its the ____ ______ _____ that price body heat to maintain a constant body temp |
Never cells Muscle cells Endocrine cells |
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Vasodilation |
Dilataion of blood vessels This decreases blood pressure |
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Vasoconstriction |
Construction of blood vessels Increases blood pressure |
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Feedback |
*What happens is what happens next * |
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Feedback |
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Comp. Of an automatic control system |
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Homeostatic mechanisms |
+ & - feedback |
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Nervous system |
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Organisation of nervous system |
Yh |
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2 groups of hormones |
Hydrophobic-(lipid soluble) perm I able and pass into cells, bind to internal receptors n turn on genes * proteins produced r responsible for effects* Hydrophilic-(&water soluble) Impermeable Bind to receptors in cell membrane |
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