Renin–Angiotensin–Aldosterone
System (RAAS): Key Components
and Functions- Questions and
Answers 100% PASS
Renin-Angiotensin-Aldosterone System (RAAS)—ANSWER--A hormone-enzyme system that
regulates blood pressure, blood volume, and sodium balance.
Renin—ANSWER--An enzyme released by the kidneys in response to low blood pressure, low
sodium, or low renal perfusion; converts angiotensinogen to angiotensin I.
Angiotensinogen—ANSWER--An inactive protein produced by the liver that is converted into
angiotensin I by renin.
Angiotensin I—ANSWER--An inactive peptide formed from angiotensinogen by renin;
converted to angiotensin II by ACE.
Angiotensin-Converting Enzyme (ACE)—ANSWER--An enzyme found mainly in the lungs that
converts angiotensin I into angiotensin II.
Angiotensin II—ANSWER--A potent vasoconstrictor that increases blood pressure and
stimulates aldosterone release.
System (RAAS): Key Components
and Functions- Questions and
Answers 100% PASS
Renin-Angiotensin-Aldosterone System (RAAS)—ANSWER--A hormone-enzyme system that
regulates blood pressure, blood volume, and sodium balance.
Renin—ANSWER--An enzyme released by the kidneys in response to low blood pressure, low
sodium, or low renal perfusion; converts angiotensinogen to angiotensin I.
Angiotensinogen—ANSWER--An inactive protein produced by the liver that is converted into
angiotensin I by renin.
Angiotensin I—ANSWER--An inactive peptide formed from angiotensinogen by renin;
converted to angiotensin II by ACE.
Angiotensin-Converting Enzyme (ACE)—ANSWER--An enzyme found mainly in the lungs that
converts angiotensin I into angiotensin II.
Angiotensin II—ANSWER--A potent vasoconstrictor that increases blood pressure and
stimulates aldosterone release.
