Physiology 2130 Lecture Notes - Lecture 1: Extracellular Fluid, Homeostasis

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

Document Summary

Homeostasis: equilibrium or maintenance of internal environment no matter the external environment, ie cells would deteriorate if left alone in bahamas, but with skin etc you are safe. Internal environment: interstitial fluid and blood cells in body: external environment: region outside body, maintained by positive and negative feedback, use both endocrine system (hormones) and nervous system (nerves, maintaining bodily volumes and temperatures. Negative feedback: contains, 1) set point (temp you want, 2) sensor/receptor (nervous system signals control centre, 3) control centre (hypothalamus, 4) effector (organs/systems, 5) controlled variable (generated heat to get what you want)