Physiology 1021 Chapter Notes - Chapter 2: Fibrinogen, Fluid Compartments, Extracellular Fluid

• School: Western University
• Department: Physiology
• Course: Physiology 1021
• Professor: Tom Stavraky

Document Summary

Introduction volume of fluid and concentration of ions is closely controlled so our organ systems can function properly. Remember: homeostasis is defined as the maintenance of relatively stable conditions in our internal environment. Body fluid compartments body is divided into two major fluid compartments: intracellular fluid compartment (inside all the cells, extracellular fluid compartment (everything outside the cells) Water intake through the digestive tract closely matches water loss through the kidneys, lungs, digestive tract, and skin. Note: big difference in ion concentrations between the inside and outside of the cell. Note: small difference in ion concentrations between the plasma and interstitial fluid differences caused by the cell membrane (plasma membrane), which forms a physical barrier between the intracellular fluid and the extracellular fluid. Membrane is selectively permeable, some substances can cross very easily, others cannot, and some large macromolecules cannot cross at all.