Physiology 1021 : Homeostasis.pdf

• School: Western University
• Department: Physiology
• Course: Physiology 1021
• Professor: Angela Nissen

Document Summary

Homeostasis: y the maintenance of relatively stable conditions within the internal environment regardless of what is happening in the external world. The internal environment is the fluid in which the cells of the body are bathed. It consists of the interstitial fluid and blood plasma. The external environment is the region outside of the body. It includes the space and contents of the digestive, respiratory and urogenital tract. Our body is capable of maintaining our internal environment so that our cells can function regardless of what is happening in the external environment (homeostasis) y the body maintains homeostasis using negative and positive feedback control. Positive feedback control systems: actually stimulates its own production physiological system that causes ovulation of the egg from the ovary. The nervous system (brain, spinal cord, and all the nerves) is especially adapted for rapid communication through its complex systems of neurons and nerves.