Body Fluids Compartments Flashcards
3 primary fluid compartments
Intracellular fluid
Extra cellular fluid ( interstitial fluid+ intravascular fluid )
Starling hypothesis
Fluid movement due to filtration across wall of capillary is dependent on balance between hydrostatic pressure and oncotic pressure across capillaires
4 starlings forces
Hydrostatic pressure in capillary
Hydrostatic pressure in instertitium
Oncotic pressure in the capillary
Oncotic pressure in insterstitium
Difference between effective and measured oncotic pressure
Effective is lower than measured
Two components of filtration coefficient
Area of the capillary walls
permeability of the capillary walls to water
Filtration coefficient formula
Area X hydraulic conductivity
Total water percentage of body weight
50 to 70% of body weight
How does water contents of the buddy correlates with fat content of the body
Inversely so
woman have less water because more adipose tissue
and men more water because less adipose tissur
Main components of ICF
Potassium
magnesium
proteins
organic phosphates
Major component of the ECF
Sodium chloride bicarbonates
What is hematocrit
Percent of blood volume occupied by red blood cell
What is an ultra ultrafiltrate of plasms
Interstitial fluid
Plasma osmolarity formula
2* plasma Na + glucose/18 + BUN/2.8
What is volume contraction
Decrease in extracellular fluid volume
What Is volume expansion
Increase in extracellular fluid volume
