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Glomerular filtrate consists of-
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Important Questions on Excretory Products and Their Elimination
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Match the terms given in column I with their physiological processes given in column II and choose the correct answer.
| Column I | Column II |
| A. Proximal convoluted tubule | (i) Formation of concentrated urine |
| B. Distal convoluted tubule | (ii) Filtration of blood |
| C. Henle's loop | (iii) Reabsorption of 70-80 % of electrolytes |
| D. Counter current mechanism | (iv) Ionic balance |
| E. Renal corpuscle | (v) Maintenance of concentration gradient in medulla |
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Fill in the blank with the correct option:
The urine becomes in the descending limb of the Henle loop.
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The diagrams show vertical sections of kidneys of coypu, brown rat and kangaroo rat, showing the relative size of cortex and medulla. Coypu are found in freshwater and are never short of water to drink. Brown rats are able to go some days without drinking. Kangaroo rats are able to live in deserts without drinking at all. Which kidney belongs to which animal?
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Female urinary system is given below: Identify correctly the labelling A, B, C, D.
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(i) Stretch receptors on the wall of urinary bladder send signals to the CNS.
(ii) The bladder fills with urine and becomes distended.
(iii) Micturition.
(iv) CNS passes on motor messages to initiate the contraction of smooth muscles of bladder and simultaneous relaxation of urethral sphincter.
The correct sequence of the events is
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