Learning
objectives
- Body fluid compartments
- Composition and significance of body fluid compartments
- Measurement of Body fluids
- Water and electrolyte balance
- Blood volume
- Disorders of fluid volume
Introduction
“Homeostasis”
Physiological
mechanisms which act to stabilize the internal environment.
“Mileu
interieur”
The
extracellular fluid is the internal environment of the body
Body composition
- Average adult male with 70kg body weight
- Water (60%)
- Minerals (7%)
- Protein and related substances (18%)
- Fat (15%)
- Water:- total body water with electrolytes
Total body water(TBW)
- Water constitutes about 60% of body weight.
- 50% in females
- Greater amount of fat tissue.
- This percentage can change, depending on age, gender, and degree of obesity.
- As a person grows older, the percentage of total body weight that is fluid gradually decreases.
