Structure of Nephron With Explain
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Hi. Before talking about structure, I will like to introduce to you the following terms (No need to learn them. Just for information): Bowman's capsule It is a large double walled cup. It lies in the renal cortex. It contains a tuft of capillaries called glomerulus and the outer wall is continuous with the rest of the nephron. The space between the two walls of the Bowman's capsule is continuous with the lumen of the next part of the nephron. The bowman's capsule and the glomerulus together constitutes the renal corpuscle or malpighian body. PCT It starts from the neck of the Bowman's capsule and it is highly convoluted. It lies in the renal cortex. The wall consists of a single layer of columnar cells bearing a lot of microvilli on the surface. Loop of Henle It is a V shaped segment of the nephron located in the renal medulla. It consists of two straight parallel limbs: a descending limb which is a continuation of the PCT and enters into the renal medulla and an ascending limb which reenters the renal cortex and joins the DCT. DCT It is greatly twisted like the PCT and lies in the renal cortex. The terminal relatively short part of the DCT is called the collecting tubule. It opens into the collecting duct. The collecting ducts receive the collecting tubules of several nephrons. They pass into the renal medulla and join each other forming large ducts of Bellini. These run through the medullary pyramids and open into the renal pelvis. Now, we are in a state to learn structure of nephron (Keep looking at the diagram) The nephron or uriniferous tubule is the functional unit of the kidney. A nephron consists of a twisted tubule closed at one end, open at the other with a network of associated blood vessels. Each kidney of man is formed of about one million nephrons. Each nephron has a length of about 3 cm. It is differentiated into 4 regions having different anatomical features and different physiological roles. Now let us describe using some easy language==> Nephron, functional unit of the kidney, the structure that actually produces urine in the process of removing waste and excess substances from the blood. There are about 1,000,000 nephrons in each human kidney. The most primitive nephrons are found in the kidneys (pronephros) of primitive fish, amphibian larvae, and embryos of more advanced vertebrates. The nephrons found in the kidneys (mesonephros) of amphibians and most fish, and in the late embryonic development of more advanced vertebrates, are only slightly more advanced in structure. The most advanced nephrons occur in the adult kidneys, or metanephros, of land vertebrates, such as reptiles, birds, and mammals. THANKYOU. PLEASE MARK AS BRAINLIEST...
