Physiology 2130 Lecture Notes - Lecture 1: Extracellular Fluid, Negative Feedback, Body Fluid

• School: Western University
• Department: Physiology
• Course: Physiology 2130
• Professor: Christine Bell

Document Summary

List the levels of organization in the human body. The problem faced by the body and all of its cells is how to surround themselves with barriers that allow desired substances to pass in and waste to pass out while maintaining their own internal environments. Physiology is the study of function in living organisms. It explores the mechanisms by which the organisms control their internal environments regardless of what happens in the outside (or external) environment. Physiology also attempts to explain the physical and chemical factors responsible for both normal function and disease (also called pathology). The internal environment is the fluid in which the cells of our body are bathed: this essentially consists of the interstitial fluid and blood plasma. The external environment is the region outside the body: the external environment also includes the space and contents of the digestive, respiratory, and urogenital tracts.