online 1 Flashcards
function of fluids in body?
srve to wet the surfaces
support structures
provided flexible volumes
enable facile distribution of cells ;nutrients gases vitamins and hormnes solvent
provided medium for exertion of waste ;excess and toxic substances
homeostasis
what is the major constituent of body fluids?
water
water is a very good solvent due to
and it takes active in the
its polar structure
transport of vitamins ;amino acid and glucose
water buldis up the ?
blood volume
ehich hormone is responsible for the reabsorption of water
ADH hormone from hypothalamus
what cause angiotensin secrtion
and what it leads to?
renin and low blood pressure
narrwing of the arteries and increase in the blood pressure levels
the major organ that regulates the blood volume and hence the pressure ?
kideny
why water helps keeping the body at constant temerature in small range
because it has high capacity due to its polar
increased solute concentration in blood is detected by?
the osmoreceptors in the brain
bodily water gains 3
water and beverages
some foods
metabolic water
body water loss
urination
exhalation during repiration and prespiration
water is supplied to the body by
exogenous and endogenous
excess amount of water intake results in
dilution of body sodium
hydration
organic and inorganic materials are found as
dissolved or suspended in body water
roles of system of the body which ar responsible from the body fluid ?
kidneys
cardiovascular
gastrointestinal
endocrinal
the activities of othe organ depend on
kidneys
when the kidneys are not functioning
if the blood pressure is lower than 40 mm hg
which glands have specific receptors that can detect any change ?
hypothalamus and pituitary
what can signal to the kidney for water release or uptake ?
hypothalamus
when the interstitial fluids form
when the blood flows into capillaries
hypervolemia
excess of fluid in the blood
which is characterized by sodium depletion?
hypovolemia
is often synonymous with dehdration since it is not caused by an excess of sodium but by deficit of free water in the body
hypernatremia
water excess relative to the sodium
hyponatremia
