Physiology 2130 Chapter Notes -Homeostasis, Cell Membrane, Fibrinogen

• School: Western University
• Department: Physiology
• Course: Physiology 2130
• Professor: all

Document Summary

Module 2 online notes (sec 2. 1 to 2. 7) Our internal environment is bathed in fluids. Due to homeostasis, the volume of fluid and concentration of ions is closely controlled so our organ systems can function properly. The body is divided into two major fluid compartments: the intercellular fluid compartment (icf inside all cells) and extracellular fluid compartment (ecf. The extracellular fluid (makes up internal environment of the body) is further divided into the interstitial fluid compartment (fluid directly outside, bathing the cells) and the plasma (watery portion of the blood) For an average 70 kg (154 lb) person, the total body water (tbw) found in all of these compartments is 42 liters (l), or 11. 1 gallons. The icf contains 28 l (7. 4 gallons or 67% of tbw), the interstitial compartment contains 11 l (2. 9 gallons or 26. 4% of tbw), and the plasma contains 3 l (0. 8 gallons or 6. 6% of tbw).