डिस्क्राइब द स्ट्रक्चर एंड फंक्शनिंग आफ नेफ्रोंस
Answers
Explanation:
Structure of nephrons: It consists of a Bowman's capsule in which glomerulus is present (cluster of capillaries). The afferent artery brings the impure blood to nephron. The cup shaped structure (Bowman's capsule) form a tubular part of nephron which leads to collecting duct.
Working of Nephron
1. Filtration: The afferent arteriole is wider and slowly it becomes a narrow tube in the glomerulus. Due to difference in the ‘width. a difference iin pressure is caused and water with dissolved impurities are squeezed out from the tube. It is collected in the Bowman's capsule which is cup-like structure and passes into the tube.
2. Reabsorption: The above filtrate passes through the tubule where the major amount of water, glucose. amino acids are selectively reabsorbed by the capillaries which are surrounding the tubule.
3. Urine formation: The water and impurities which are not reabsorbed is sent to a collecting duct. This filtrate contains more of dissolved nitrogenous wastes i.e. urea and hence it is termed as urine. From here the urine enters the ureter and is collected in urinary bladder..
Answer:
The excretory units of the kidneys are called nephrons. Each kidney has a large number of nephrons packed close together.
The excretory units of the kidneys are called nephrons. Each kidney has a large number of nephrons packed close together.Each nephron has a cup-shaped start called the 'Bowman's capsule' into which project a tuff of capillaries called 'Glomerulus'. The blood is brought into the kidney by the glomerulus. After the filtration in the Bowman's capsule, blood enters into the tubular part of the nephron where useful molecules like glucose, amino acids, salts, vitamins and a major amount of water etc. are selectively reabsorbed as urine flows along the tube. The final filtrate is finally drained into the ureters. The final waste contains water and nitrogenous wastes like urea, uric acid, etc.
The excretory units of the kidneys are called nephrons. Each kidney has a large number of nephrons packed close together.Each nephron has a cup-shaped start called the 'Bowman's capsule' into which project a tuff of capillaries called 'Glomerulus'. The blood is brought into the kidney by the glomerulus. After the filtration in the Bowman's capsule, blood enters into the tubular part of the nephron where useful molecules like glucose, amino acids, salts, vitamins and a major amount of water etc. are selectively reabsorbed as urine flows along the tube. The final filtrate is finally drained into the ureters. The final waste contains water and nitrogenous wastes like urea, uric acid, etc.Functioning of Nephrons
Filtration: Filtration of blood takes place in Bowman’s capsule from the capillaries of glomerulus. The filtrate passes into the tubular part of the nephron. This filtrate contains glucose, amino acids, urea, uric acid, salts and a major amount of water.
Filtration: Filtration of blood takes place in Bowman’s capsule from the capillaries of glomerulus. The filtrate passes into the tubular part of the nephron. This filtrate contains glucose, amino acids, urea, uric acid, salts and a major amount of water.Re-absorption: As the filtrate flows along the tubule useful substances such as glucose, amino acids, salts and water are selectively re-absorbed into the blood by capillaries surrounding the nephron tubule.
Filtration: Filtration of blood takes place in Bowman’s capsule from the capillaries of glomerulus. The filtrate passes into the tubular part of the nephron. This filtrate contains glucose, amino acids, urea, uric acid, salts and a major amount of water.Re-absorption: As the filtrate flows along the tubule useful substances such as glucose, amino acids, salts and water are selectively re-absorbed into the blood by capillaries surrounding the nephron tubule.Urine: The filtrate which remains after re-absorption is called urine. Urine contains dissolved nitrogenous waste, i.e. urea and uric acid, excess salts and water. Urine is collected from nephrons by the collecting duct to carry it to the ureter.
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