Fluid & Electrolyte/Acid-Base Flashcards
Water
makes up 55%-75% of the total body weight
Electrolytes
the + & - ions present in body fluids
Each type of ion has a
specific function in body fluids
Water Compartments (2)
- Intracellular fluids (ICF)
- Extracellular fluids (ECF)
-Intracellular fluids (ICF)
2/3 of the total body water is the water within the cells
Extracellular fluids (ECF)
1/3 of the total body water is the water outside of the cells
Examples of ECF
- plasma
- lymph
- tissue fluid
- specialized fluids
Define Water compartments
-fluid sites in the body
water constantly moves from one fluid site to another by the processes of
filtration & osmosis
osmosis example
tissue fluid enters the cells
filtration example
plasma is forced out of the blood into the tissue spaces becomes tissue fluid
Define Osmosis
the diffusion of H2O through a semi-permeable membrane
Define Osmolarity
the concentration of osmotically active particles in a solution
Water will move through cell membranes to areas of
greater electrolyte concentration
The ______ of electrolytes present in the various water compartments will determine the amount of ______ that will take place
concentration
osmosis
If the H2O is in balance in all of the compartments
the electrolytes are in balance
The relative proportion of H2o to electrolytes remains
constant
Water intake we need
1600mls/day
Water intake
- Food also contains water; ~700mls/day
- Metabolic water, a product of cell respiration ~200mls/day
- Total intake ~2500mls/day =2.5L/day
Most of the water output is in the form of urine produced by the kidneys . How much
1500mls/day
Sweat
500mls/day
Water vapor in exhaled air
300mls
Feces
200mls
Total
2500mls
