Angiotensinogen is a protein produced by

• A) Macula densa cells
• B) Liver cells
• C) Juxtaglomerular cells
• D) Endothelial cells

Angiotensinogen is a protein that plays a crucial role in regulating blood pressure and fluid balance in the body. It is primarily produced by:

Liver Cells

The liver cells, also known as hepatocytes, are responsible for synthesizing angiotensinogen. This protein is then converted into angiotensin I by the action of renin, which is released by the juxtaglomerular cells in the kidneys.

Key Points

• Source: Angiotensinogen is made in the liver.
• Function: It is involved in the renin-angiotensin system, which helps regulate blood pressure.
• Conversion: Renin converts angiotensinogen into angiotensin I.

In summary, the correct answer is B) Liver cells.