Learning Objectives

• Describe the body fluid compartments
• Constituents of extracellular fluid and intracellular fluid
• Describe the distribution of body water
• Explain the different routes of body water output
• Describe the ‘thirst mechanism’
• Discuss the homeostasis of sodium and potassium
• Explain the factors contributing to edema

Fluid Compartments & Osmolarity

• what are the 2 main body fluid compartments?
• what is osmolarity?
• how does osmolarity change with dehydration vs overhydration?
• Changes to Osmolarity With […] Plasma

Capillary Fluid Exchange & Edema

• what type of net fluid movement occurs at the ends of capillaries?
• what are the 4 Starling forces?
• what 3 factors determine the strength of these forces?
• what is edema?
• what causes pitting vs non-pitting edema?