Question

liver
juxtaglomerular cells in kidney
capillary endothelial cell
adrenal cortex
blood
angiotensinogen
1.
2.
ace
3.
4.

Explanation:

Identify the components of the pathway

The diagram illustrates the Renin-Angiotensin-Aldosterone System (RAAS):

• The liver secretes angiotensinogen into the blood.
• Juxtaglomerular cells in the kidney secrete renin (labeled as 1), which cleaves angiotensinogen into angiotensin I (labeled as 2).
• Capillary endothelial cells express angiotensin-converting enzyme (ACE), which converts angiotensin I into angiotensin II (labeled as 3).
• Angiotensin II acts on the adrenal cortex to stimulate the secretion of aldosterone (labeled as 4).

Match the numbered labels to the molecules

• 1: Renin
• 2: Angiotensin I
• 3: Angiotensin II
• 4: Aldosterone

Answer:

1. Renin
2. Angiotensin I
3. Angiotensin II
4. Aldosterone