Physiology 2130 Study Guide - Extracellular Fluid, Blood Plasma, Thermostat

• School: Western University
• Department: Physiology
• Course: Physiology 2130
• Professor: Anita Woods

Document Summary

The problem faced by body and all of its cells is how to surround itself with barrier and allow specific substances to pass in and wastes to move out while maintaining its own internal environment. Physiology the study of function in living organisms: how they control internal environments regardless of its external environment, attempts to explain physical and chemical factors responsible for normal function and disease (pathology) Internal environment the fluid in which our cells are bathed (interstitial fluid and blood plasma) External environment region outside body (and spaces outside the digestive, respiratory and urogenital tracts: **the inside of your digestive system, lungs, and parts of your kidney, bladder are considered external. Homeostasis maintaining stable conditions of internal environment regardless of the external environment (body temp, salt concentration, water balance, etc) Negative feedback system contain a set point, control center (integrator) effector, controlled variable, sensor (receptor: ex.