fluid balance & intravenous therapy Flashcards
___% of body fluid is ____
60%; water
fluids in the body is affected by:
age, gender, body fat
ICF (intracellular fluid) is:
fluid INSIDE the cell (2/3 of fluid)
ECF (extracellular fluid) is:
found OUTSIDE the cells (1/3 of fluid)
to maintain ____ or _____, fluids ____ the cell must be balanced with ______ fluid.
balance or homeostasis; inside; extracellular
fluids ____ the cell must be balanced with _____ fluid
outside;intracellular
extracellular is broken down into 3 divisions: intravascular
found in the vascular system that consists of arteries, veins, and capillary networks. Intravascular fluid is whole blood volume and also includes red blood cells, white blood cells, plasma, and platelets. (about 3L)
extracellular is broken down into 3 divisions: interstitial
fluid between cells - “third space” (about 10 L)
extracellular is broken down into 3 divisions: transcellular
cerebral spinal fluid, synovial fluid, peritoneal, and pleural fluid. each fluid compartments is separated by a selective permeable membrane that permits movement of water and some solutes.
fluid and solute movement:
transporting fluid and substances to and from cells from the cell membranes
filtration:
movement of fluid (water) across cell membrane due to hydrostatic pressure
diffusion:
movement of molecules/substances from a higher area of concentration to a lower area of concentration in diffusion - solutes move (fish swimming with the current)
osmosis:
movement of fluid (water) from areas of more fluid concentration (and fewer solutes) to areas of less fluid concentration (and more solutes) - fluids move
hydrostatic pressure:
is generated by the cardiovascular system as blood is pumped through the body’s blood vessels.
diffusion stops when __
concentrations are equal in both area
what is a semi-permeable membrane in osmosis?
a type of biological or synthetic, polymeric membrane that will allow certain molecules or ions to pass through it by osmosis
what does osmotic balance mean?
the control of water and electrolyte balance in the body
osmoregulation is the:
active regulation of the osmotic pressure of bodily fluids to maintain the homeostasis of the body’s water content. It keeps the body’s fluids from becoming too dilute or too concentrated
what is meant by osmotic?
having to do with osmosis, this causes the more concentrated solution to become more diluted, and makes concentrations in both solutions more equal
active transport:
sodium and potassium use ATP to move in and out of cells in a form of active transport called the sodium-potassium pump
-sodium moves out of the cells and potassium moves into the cells
for molecules to move against a concentration gradient, _____ energy is needed, the cells use ____ to perform the active transport
external; ATP
ATP (adenosine triphosphate) is made in the ____ _____
cell mitochondria
hydrostatic and oncotic pressure:
movement of fluid from the capillaries to the interstitium (tissue space)
hydrostatic pressure:
pushing force, pushes fluid out of capillaries (exerted by pumping of heart)