Renin-angiotensin-aldosterone system (RAAS) quiz for students!
To help you understand important concepts in nursing school like how ACE inhibitors work or how the body manages the blood pressure, it is essential you understand the renin-angiotensin-aldosterone system.
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Renin-Angiotensin-Aldosterone System (RAAS) Quiz
1. What is the goal of the renin-angiotensin-aldosterone system (RAAS)?
A. Decrease blood pressure
B. Increase the heart rate
C. Increase the blood pressure
D. Decrease the heart rate
The answer is C.
2. When the RAAS is activated due to a change in body hemodynamics, the __________________ stimulates the ___________________ cells in the kidneys to release _______________.
A. parasympathetic nervous system; mesangial; aldosterone
B. sympathetic nervous system; podocytes; renin
C. parasympathetic nervous system; juxtaglomerular; aldosterone
D. sympathetic nervous system; juxtaglomerular; renin
The answer is D. The sympathetic nervous system stimulates the juxtaglomerular cells in the kidneys to release renin.
3. What component of the RAAS (renin-angiotensin-aldosterone system) is created and found in the liver that is activated by renin?
A. Aldosterone
B. Angiotensin I
C. Angiotensinogen
D. Angiotensin II
The answer is C.
4. What is the role of ACE in the renin-angiotensin-aldosterone system?
A. It activates angiotensinogen which turns into angiotensin I.
B. It causes the kidney cells to release renin.
C. It causes angiotensin II to trigger the adrenal glands to produce aldosterone.
D. It converts angiotensin I into angiotensin II.
The answer is D.
5. Select all the roles of angiotensin II when it is activated in the renin-angiotensin-aldosterone system:
A. Activates bradykinin
B. Triggers the release of aldosterone
C. Increases the blood volume
D. Causes vasodilation
E. Increases systemic vascular resistance
F. Causes the release of ADH (antidiuretic hormone)
The answers are B, C, E, and F. Angiotensin II causes vasoconstriction (not dilation) which will increase systemic vascular resistance and blood pressure. It also increases blood volume by triggering the release of aldosterone by the adrenal cortex (which causes the kidneys to keep sodium and water) and antidiuretic hormone (ADH) by the pituitary gland, which causes the kidneys to keep water. It does not activate bradykinin.
6. During RAAS activation, what gland releases aldosterone?
A. Hypothalamus
B. Thymus
C. Adrenal cortex
D. Pituitary
The answer is C.
7. What is the role of aldosterone?
A. It causes constriction of vessels.
B. It causes the kidneys to keep sodium and water.
C. It causes the kidneys to keep potassium and water.
D. It causes the kidneys to only keep water.
The answer is B. Aldosterone helps to increase blood volume by causing the kidneys to keep sodium and water. When blood volume is increased it will help increase the blood pressure.
8. During the renin-angiotensin-aldosterone system activation, what gland releases antidiuretic hormone (ADH)?
A. Pituitary
B. Thyroid
C. Hypothalamus
D. Adrenal cortex
The answer is A.
9. What is the role of the antidiuretic hormone during RAAS?
A. Causes the kidneys to keep water
B. Leads to vasoconstriction of vessels
C. Activates the release of angiotensin I
D. Prevents the activation of the parasympathetic nervous system
The answer is A.
10. Select below the CORRECT sequence in how the renin-angiotensin-aldosterone system works:
A. Angiotensin I -> Angiotensin II -> ACE -> Renin -> Angiotensinogen
B. Renin-> Angiotensinogen -> Angiotensin I -> ACE -> Angiotensin II
C. Renin -> Angiotensin I -> Angiotensinogen -> ACE -> Angiotensin II
D. Angiotensinogen -> Renin -> ACE -> Angiotensin I -> Angiotensin II
The answer is B.
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