Juxta glomerular cells of renal cortex synthesize a hormone called :

Options

A. ADH
B. Oxytocin
C. Renin
D. Urochrome

Answer

### Step-by-Step Solution:

1. **Identify the Cells**: The question asks about the juxtaglomerular cells located in the renal cortex. These cells are part of the juxtaglomerular apparatus, which plays a crucial role in regulating blood pressure and fluid balance.

2. **List the Hormones**: The options provided in the question include ADH (Antidiuretic Hormone), oxytocin, renin, and urochrome.

3. **Analyze Each Hormone**:
- **ADH**: This hormone is produced in the hypothalamus and released from the pituitary gland. Its main function is to retain water in the body and reduce water loss.
- **Oxytocin**: This hormone is also produced in the hypothalamus and released from the pituitary gland. It primarily affects smooth muscle contractions, particularly in childbirth and lactation.
- **Renin**: This hormone is synthesized and secreted by the juxtaglomerular cells. It plays a key role in the renin-angiotensin-aldosterone system, which regulates blood pressure.
- **Urochrome**: This is a pigment that gives urine its yellow color and is not a hormone.

4. **Determine the Correct Answer**: Since the question specifically asks about the hormone synthesized by juxtaglomerular cells, the correct answer is renin.

5. **Final Answer**: The juxtaglomerular cells of the renal cortex synthesize the hormone called **renin**.