BIOL 1000 Study Guide - Midterm Guide: Extracellular Fluid, Negative Feedback, Poikilotherm
14 Nov 2016
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Internal & chemical conditions are in a suitable range for life process. ph 7. 4. Dynamic equilibrium set of reactions occur at rate that maintains homeostasis (sweating to cool down) Negative feedback response of a system that acts to maintain equilibrium by compensating for any changes made to the system. Sensor detects changes made in environment (thermistor) Effector element of a feedback system that acts to return the system to optimal state. Positive feedback response of a system that increases the effect of a change made to a syste(cid:373). (cid:862)fight o(cid:396) flight(cid:863) (cid:396)espo(cid:374)se. Osmosis movement of water across semi- permeable membrane from [high] to [low] Isotonic [water] is equal in & out. Hypertonic high [inside] water moves out and cell shrivels. Hypotonic high [outside] water moves into cells & cells swell and burst. Poikilotherm equal to externam environment (fish, reptiles) Generate themeral energy to regulate body temp (endothermy) Thermal acclimatization animal gradually adjusts to temp as it changes.
