Question

what enzyme is released from the kidney in response to hypotension?
○ a. angiotensin i
○ b. aldosterone
○ c. antidiuretic hormone (adh)
○ d. renin

Explanation:

To solve this, we analyze each option:

• Option a: Angiotensin I is formed from angiotensinogen by renin, not released by the kidney as an enzyme in response to hypotension.
• Option b: Aldosterone is a hormone released by the adrenal cortex, not an enzyme from the kidney.
• Option c: Antidiuretic hormone (ADH) is released by the posterior pituitary, not the kidney.
• Option d: Renin is an enzyme released by the juxtaglomerular cells of the kidney in response to hypotension (low blood pressure) to initiate the renin - angiotensin - aldosterone system.

Answer:

d. Renin