Fluid and homeostasis L8 Flashcards
main fluid compartments in the body
intracellular fluid compartment
extracellular fluid compartment
what is interstitial fluid
the fluid in spaces between cells
part of extracellular fluid
red blood cells also called
erythrocyte
most abundant white cell
neutrophill
what is osmolarity
measure the concentration of solute particles in solution
osmosis=
movement of water down its own concentration gradient from low osmolarity to high across a semipermeable membrane
hypertonic solution=
H2O moves out of cell
isotonic solution=
equilibrium (normal)
hypotonic solution=
H2O moves in cell
what signals the kidneys to reabsorb more or less water
pituitary
Oedema=
excessive accumulation of extracellular fluid, due to disturbance of fluid movements which are usually balanced
forces that cause fluid movement
hydrostatic pressure within vessels
osmotic pressure
what are the forces at the arterial end of the capillary bed
hydrostatic force> osmotic force
net movement of fluid from plasma to tissue
what are the forces at the venous end of the capillary bed
Osmotic force> hydrostatic force
net movement of fluid from tissue to plasma
where is excess fluid drained
lymphatic vessels
