Blood vessel leaving glomerulus in a mammalian nephron is called

Options

A. Renal artery
B. Efferent arteriole
C. Afferent arteriole
D. Vasa recta

Answer

**Step-by-Step Solution:**

1. **Understanding the Nephron Structure**: The nephron is the functional unit of the kidney, consisting of various parts including the glomerulus, which is a network of capillaries.

2. **Identifying the Blood Vessels**: Blood enters the glomerulus through the afferent arteriole and exits through the efferent arteriole.

3. **Analyzing the Options**:
- **Option 1: Renal Artery**: This vessel carries blood from the heart to the kidneys, not from the glomerulus.
- **Option 2: Efferent Arteriole**: This is the correct answer as it carries blood away from the glomerulus.
- **Option 3: Afferent Arteriole**: This vessel brings blood into the glomerulus, so it is incorrect.
- **Option 4: Vasa Recta**: These are capillary networks that surround the nephron and help in maintaining the concentration gradient, but they do not directly leave the glomerulus.

4. **Conclusion**: The blood vessel that leaves the glomerulus in a mammalian nephron is the **efferent arteriole**.

**Final Answer**: Efferent Arteriole

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