The Nephron Urine storage and elimination
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Nephron is a unit of filtration in kidneys that filters waste material. It selectively reabsorbs or excretes water with the help of capillaries that surround it. What is the likely benefit of this? It makes the process of filtration at Bowman’s capsule easier. It helps keep the output of urine constant throughout the day. It helps to uptake and store excess amount of water in the body for later use. It maintains the concentration of urine based on the amount of water present in the body.
Adi S.
Urinary excretion permits the body to get rid of the wastes produced by the organs. These wastes are carried by blood to the kidneys where they are eliminated in the form of urine. To determine the role of the kidney, the composition of blood entering and leaving the kidneys as well as the composition of urine are studied in a healthy individual. The obtained results are represented in the table below. Answer questions A - C below. Constituents (g/l) | Blood entering the kidney | Blood leaving the kidney | Urine Water | 920 | 900 | 950 Proteins | 80 | 80 | 0 Urea | 0.3 | 0.2 | 20 A. By referring to the table above, determine the components of urine. (2) B. Compare the level of urea in the blood entering the kidney to that in the blood leaving the kidney. What can you conclude? (2) C. Show, by referring to the table, that the kidneys do not eliminate proteins from blood.(1)
Madhur L.
Nephron is a unit of filtration in the kidneys that filters waste material. It selectively reabsorbs or excretes water with the help of capillaries that surround it. What is the likely benefit of this? (a) It makes the process of filtration at Bowman's capsule easier. (b) It helps keep the output of urine constant throughout the day. (c) It helps to uptake and store an excess amount of water in the body for later use. (d) It maintains the concentration of urine based on the amount of water present in the body.
Sri K.
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