Vasa recta are tubular capillaries around

Options

A. Posterior part of alimnetary canal
B. PCT
C. Loop of Henle
D. DCT

Answer

**Step-by-Step Solution:**

1. **Understand the term "Vasa Recta":** Vasa recta are specialized blood vessels that are part of the renal system. They are long, hairpin-shaped capillaries.

2. **Function of Vasa Recta:** These vessels play a crucial role in the kidney's ability to concentrate urine. They help maintain the osmotic gradient in the renal medulla, which is essential for the reabsorption of water.

3. **Location of Vasa Recta:** Vasa recta run parallel to the loop of Henle, which is a part of the nephron in the kidney.

4. **Analyze the options:**
- Option A: Posterior part of the elementary canal - Incorrect, as this does not relate to the kidney.
- Option B: PST (Proximal Straight Tubule) - Incorrect, as Vasa recta are not primarily associated with this structure.
- Option C: Loop of Henle - Correct, as Vasa recta surround the loop of Henle.
- Option D: DST (Distal Straight Tubule) - Incorrect, as Vasa recta do not surround this structure.

5. **Conclusion:** Based on the understanding of Vasa recta and their function, the correct answer is Option C: Loop of Henle.

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