Body Fluids and Blood Flashcards
What are the 3 main fluid compartments?
Blood (technically plasma)
Intracellular
Interstitial
What is interstitial fluid?
Fluid that surrounds cellls
What is the extracellular space?
Plasma Volume
Interstitial Space
What are compartments?
Physiological collections of organs and tissues containing water- divided by cell membranes
What are some examples of other fluid compartments?
CSF Aqueous and vitreous humours of the eye Synovial fluid Amniotic fluid GI tract secretions Lymph
What space are transcellular fluids part of?
Extracellular fluid
What is the dilution method?
Add known amount of substance to unknown volume
Measure conc in grams per litre
What is the dilution methods used for?
To measure fluid compartments
What is the interstitial space?
ECS-Plasma Volume
What is the intracellular space?
TBW-ECS
What constituents body fluids?
Ions in solution
Proteins
Dissolved gases,nutrients,metabolites
Cells in blood
What is the ionic composition of extra and intracellular fluids?
Sodium ions
Chloride ions
Potassium ions
What is the osmolality of ICF and ECF?
Equal
What controls Plasma volume?
Osmolarity of plasma