[BIOL 1412] - Midterm Exam Guide - Ultimate 19 pages long Study Guide!

• School: University of Manitoba
• Department: Biological Sciences
• Course: BIOL 1412
• Professor: Jennifer Mcleese

Document Summary

Topic i: introduction to physiology: what is physiology, homeostasis changes in the external environment) Cells can only survive within a narrow range of conditions. Body conditions must be maintained within physiological limits. The ability to maintain relatively stable conditions in the internal environment (despite: ph, temperature, blood gases (co2, o2, blood pressure (b. p. , intracellular + extracellular (icf + ecf) fluid volumes, etc. Organ systems function together to maintain homeostasis. Nervous and/or endocrine system(s) control all other systems (control centres) Act to: maintain homeostasis, permit departures from homeostasis in a controlled manner e. g. pregnancy, growth, sudden fright, homeostasis regulation: Change in internal environment must be detected or anticipated. Then nervous and/or endocrine system responds, altering system(s) responsible for that condition e. g. (cid:1435) respiratory rate at start of exercise (cid:1436) proprioceptors (ns sensory receptors) signal movement before a change in internal conditions occurs (gases in blood) Types of ns/endocrine responses: anticipatory responses, feedback mechanisms.