Question
Describe in detail the structure of a nephron.
✓
Answer
- A nephron has two parts, namely (i) the glomerulus and (ii) the renal tubule.
- The glomerulus is a tuft of capillaries formed by the afferent arteriole; it is located in the hollow of the Bowman's capsule.
- The renal tubule has three parts:
- Proximal convoluted tubule.
- Loop of Henle.
- Distal convoluted tubule.
- The proximal renal tubule is closed at the proximal end; it is expanded to form a double-walled cupshaped structure, called Bowman's capsule.
- It continues to form a highly convoluted proximal convoluted tubule.
- The loop of Henle arises from the end of the proximal convoluted tubule, with a descending limb and an ascending limb.
- The distal renal tubule, begins as the distal convoluted tubule and continues as a collecting tubule that joins the collecting duct.
- Each collecting duct receives the collecting tubules of many nephrons.
- The collecting ducts converge, run through the renal pyramids and open into the renal pelvis through renal papillae.
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