renin angiotestin system Flashcards
what activates the RAAS System
drop in blood pressure (low blood pressure)
drop in blood volume
what is the 1st step in the RAAS system
kidneys release renin
once renin gets released by the kidneys how does the liver respond
liver responds by releasing angiotensin
when angiotensin is released by the liver what does renin do
renin interacts with angiotensin and becomes angiotensin 1
what does ACE angiotensin converting enzyme do to angiotensin 1
ACE converts angiotensin 1 into angiotensin 2
why does angiotensin 2 lead to vasoconstriction
constricts blood vessels to
keep more water in blood
what does angiotensin 2 cause the adrenal cortex (adrenal gland) to release
aldosterone
what does the release of aldosterone do
causes the kidneys to keep sodium and water – decrease urination
what does aldosterone causes the pituitary gland to do
keep water and stimulates thirst
