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21 Cards in this Set
- Front
- Back
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Homeostasis
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All body systems working together to maintain a stable internal environment
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Methods for Maintaining Homeostasis
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Autoregulation (intrinsic)
Extrinsic regulation Receptor Control Center (AKA Integrating Center) Effector |
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Autoregulation (intrinsic) - func'n
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automatic response in a cell, tissue, or organ
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Extrinsic regulation - func'n
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responses controlled by nervous and endocrine systems
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Receptor - func'n
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receives the stimulus
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Control Center (aka Integrating Center) - func'n
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processes the signal and sends instructions
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Effector - func'n
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carries out instructions
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Error signal - func'n
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Any difference between the actual value and the set point
Triggers a response to “correct” the signal |
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In negative feedback, the response of the effector _______ the stimulus
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In negative feedback, the response of the effector _negates_ the stimulus
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In Positive Feedback, The response of the effector _________ the stimulus
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In Positive Feedback, The response of the effector _reinforces_ the stimulus
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Thermoregulation - def'n
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the ability to maintain body temperature
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Poikilothermic - def'n
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the inability to maintain body temperature
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Hypothermia - def'n
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decreased body temp
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Hyperthermia - def'n
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increased body temp
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Radiation - def'n
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Thermal energy transferred from the body to the environment via electromagnetic waves
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Conduction - def'n
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Transfer of energy between two objects that are in direct contact with each other
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Evaporation - def'n
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Heat is lost from an object through the evaporation of water from it’s surface
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Convection - def'n
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Transfer of heat from one place to another by moving gas or liquid
Warmer air forms a kind of “blanket” around you |
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How do we measure homeostasis
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The function of a system
Cardiovascular, digestion, renal, respiratory, musculoskeletal, nervous, etc Lab functions ie. EKG, EEG, Blood tests (BUN, Cr, Liver function, etc) Measurement of height, weight, volume, etc. |
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Rate implies a ____ relationship
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Rate implies a _time_ relationship
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Ratio - def'n
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an expression that compares two numbers or quantities by division
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