Movement of Body Fluids

Edema

Swelling caused by excess fluid in body tissues (outside blood vessels)

Extracellular space

Anything outside of cells, in the body it is intervascular and interstitial spaces

Glomerulus

Tiny dense cluster of capillaries that act as kidney filter unit at beginning of nephron

renal tubule

Long winding tube following the glomerulus. It is permeable to allow for reabsorption of water and nutrients to blood vessels and if not then the passage of waste as urine

hydrostatic force/pressure

Pressure exerted by fluid on its compartments walls. In blood vessels it allows for filtration as water moves from high pressure to low near arterial end.

Works in opposition to oncotic force

Oncotic force/pressure

Pulling force in blood vessels generated by high protein concentration in blood. Allows for reabsorption of fluid into vessels near venous end.

Works in opposition of hydrostatic force

osmotic force

movement of water towards areas of higher particle concentration.

Determines movement of water, in and out of cells.

Starling forces

Made up of oncotic and hydrostatic pressure

Determines movement of fluid in and out of vessels

Total body water precents

• Intracellular: 2/3

• Interstitial: 1/3 × 2/3 = 2/9

• intravascular: 1/3 × 1/3 = 1/9

Dialysis kidney (Types)

Medical procedure that artificially replicates kidney function.

• Hemodialysis

• peritoneal dialysis

Dialysate

Specifically formulated fluid surrounding artificially capillaries that uses starling forces to draw out waste products and excess electrolytes from blood

Hemodialysis

Blood drawn out of body and into a dialysis machine where excess waste, electrolytes, and fluid are filtered out into dialysate