Each nephron has

Options

A. Three parts -PCT,DCT and HL
B. Three parts -Glomerulus , PCT and DCT
C. Two parts -Glomerulus and bownman 's capsule
D. Two parts -Glomerulus and renal tublue

Answer

**Step-by-Step Solution:**

1. **Definition of Nephron**: A nephron is the structural and functional unit of the kidney. Each kidney contains approximately 1 million nephrons.

2. **Function of Nephron**: The primary function of the nephron is to perform excretion, which involves the removal of nitrogenous waste from the blood.

3. **Structure of Nephron**: The nephron consists of several key components:
- **Bowman's Capsule**: This is the initial part of the nephron that encases a network of capillaries known as the glomerulus.
- **Glomerulus**: A tuft of about 50 capillaries where filtration of blood occurs.
- **Proximal Convoluted Tubule (PCT)**: The segment following Bowman's Capsule where reabsorption of water, ions, and nutrients occurs.
- **Loop of Henle**: A U-shaped portion that concentrates urine and plays a role in water and salt balance.
- **Distal Convoluted Tubule (DCT)**: The segment after the Loop of Henle that further adjusts the composition of urine.
- **Collecting Duct**: The final part of the nephron where urine is collected and transported to the renal pelvis.

4. **Summary of Components**: In summary, each nephron has the following major structures:
- Bowman's Capsule
- Glomerulus
- Proximal Convoluted Tubule (PCT)
- Loop of Henle
- Distal Convoluted Tubule (DCT)
- Collecting Duct

5. **Conclusion**: Therefore, the correct answer to the question "Each nephron has" is that it has several structures including Bowman's Capsule, glomerulus, PCT, DCT, Loop of Henle, and collecting duct.

---