Ch 9- Fluid & Electrolyte Balance

How much body fluid is in your cells?

2/3

How much body fluid is outside your cells?

1/3

Concentration Formula

# solute/ solution volume

Osmotic Pressure

Physical force that keeps electrolytes from traveling across a semipermeable membraneby balancing solute concentrations on either side.

what is an electrolyte

minerals that turn into electrically charged ions when dissolved in water

osmosis

water always moves toward where there is a higher concentration of salt/solutes

thirst trigger

hypothalamus

ADH

Anti-Diuretic Hormone

intracellular

inside the cell

extracellular

outside the cell

interstitial fluid

in between tissue/ organs

intravascular

water in the blood

extracellular electrolytes

sodium & chloride

intracellular electrolytes

potassium, phosphorus

why are electrolytes important

create speedy action potential

sensible loss

pee & sweat

Insensible

breathing & skin evaporation

sodium intake

2.4 grams/ day

potassium intake

4.7 grams/ day