Physiology 1021 Lecture Notes - Water Intoxication, Axon Hillock, Depolarization

• School: Western University
• Department: Physiology
• Course: Physiology 1021
• Professor: Anita Woods

Document Summary

Physiology is the study of the normal functioning of a living organism and its components. The cell is the smallest form of life. Tissues then come together to form an organ. When multiple organ systems work together, an organism is created. The cells in a multicellular organism play a critical role in the homeostasis of the organism as a whole. Homeostasis is the ability of the body to maintain a relatively constant internal environment. Homeostasis is derived from the words homeo= similar and stasic= constant. Our body"s are constantly being exposed to external environments, such environments can cause the body"s internal environment to leave homeostasis. The body uses a system called negative feedback to control the changes brought upon by the external environment. When the body senses a change in ph, temperature etc. a response is sent to counteract the external environment.