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Fluid in Body
- Function
- Prevents sudden temperature changes
- Cushions body organs e.g. CSF and CNS
- Solvent = allowing electrolytes to ionise
- Reagent in many chemical reactions
- Act as a transport medium e.g. blood
- Lubricant e.g. mucus
- Prevents sudden temperature changes
- Physiology
- Fluid Compartments
- Male
- 40% solid
- 60% fluids
- 2/3 = Intracellular fluid
- 1/3 = Extracellular fluid
- 80% Interstitial fluid
- 20% Plasma
- 80% Interstitial fluid
- 2/3 = Intracellular fluid
- 40% solid
- Female
- 45% solid
- 55% fluids
- 2/3 = Intracellular fluid
- 1/3 = Extracellular fluid
- 80% Interstitial fluid
- 20% Plasma
- 80% Interstitial fluid
- 2/3 = Intracellular fluid
- 45% solid
- Male
- Relation to Lymph flow (Factors that increase rate)
- Rate of lymph formation
- Contraction of skeletal muscles = compress lymph in vessels = pushing it
- Valves that prevent backflow
- Rythmic contraction of lymph vessels
- Venturi effect = blood flow , drawing lymph into blood vessel where 2 meet
- Respiratory pump --> inhalation, pressure in thoracic cavity is lower that
the one in abdominal. Effect of drawing air into lungs and pulling lymph
upwards inside lymph vessels
- Gravity
- Rate of lymph formation
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