Physiology 1021 Chapter Notes -Extracellular Fluid, Negative Feedback, Blood Plasma

• School: Western University
• Department: Physiology
• Course: Physiology 1021
• Professor: Beth Mac Dougall- Shackleton

Document Summary

Physiology: the study of function in living organisms; explores mechanisms organisms use to control their internal environments regardless of the outside (external) environment; explains physical and chemical factors responsible for normal function and disease (pathology) Negative feedback: the final product or the controlled variable (eg. heat) ends up shutting off the effector (furnace) Positive feedback: the controlled variable keeps the effector on. The body"s structural hierarchy: atoms < molecules < macromolecules < organelles < tissue < organ < organ system < organism.