Renin is an enzyme produced by special cells in the kidneys (juxtaglomerular cells) in response to low blood pressure, low blood volume, or low sodium levels. It initiates a cascade of reactions that lead to the production of angiotensin II, a hormone that causes vasoconstriction and stimulates the release of aldosterone, another hormone that increases sodium reabsorption in the kidneys.

Solved

Renin Is ________

Question 38

Multiple Choice

Renin is ________.

A) a pituitary hormone that decreases water excretion
B) minerals deposited into bone that give strength and rigidity
C) an adrenal hormone that causes sodium reabsorption
D) a protein-calcium complex that influences enzyme activity in cells
E) an enzyme in kidneys formed in response to low blood pressure

Correct Answer: