Question

explain function of nephrons


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Answer 1

Nehpron- It has a tubular structure whose one is cup shaped called Bowman's capsule containing cluster of capillaries. This cup shaped structure collects the filtered urine . The structure formed by the cluster of capillaries is called glomerulus. In the glomerulus ultrafiltration takes place. This glomerulus is followed by tubular part and collecting duct that selective reabsorption of glucose ,amino acid ,salt and water takes place . The remaining liquid part left in the collecting that constitutes the urine.

Function of Nephrons- Nehprons helps in filtering nitrogenous waste from the blood . The blood entering the glomerulus contain waste which are filtered in the bowman capsule . The filtrate formed may contain some useful substances such as glucose ,amino acids salts and major amount of water these are selectively reabsorbed as a urine flows along the tube. The amount of water reabsorbed depend on how much excess water there is in the body and on how much of dissolved waste there is to be excreted.

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Answer 2

• A nephron is responsible for removing waste products, stray ions, and excess water from the blood.
• The blood travels through the glomerulus, which is surrounded by the glomerular capsule.
• As the heart pumps the blood, the pressure created pushes small molecules through the capillaries and into the glomerular capsule.
• This is the, more physical function of the nephron.
• Next, the ultrafiltrate must travel through a winding series of tubules.
• The cells in each part of the tube have different molecules that they like to absorb.
• Molecules to be excreted remain in the tubule, while water, glucose and other beneficial molecules work their way back into the bloodstream.
• As the ultrafiltrate travels down the tubules, the cells become more and more hypertonic compared to the ultrafiltrate.
• This causes a maximum amount of water to be extracted from the ultrafiltrate before it exits the nephron.
• The blood surrounding the nephron returns to the body via the interlobular vein, free of toxins and excess substances.
• The ultrafiltrate is now urine, and moves via the collecting duct to the bladder, where it will be stored.

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