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Assertion :- Nearly 99 percent of the fi...

Assertion `:-` Nearly 99 percent of the filtrate has to be reabsorbed by the renal tubules.
Reason `:-` Glucose is reabsorbed by active mechanism is PCT.

A

If both Assertion & Reason are True & the Reason is a correct explanation of the Assertion .

B

If both Assertion & Reason are True but Reason is not a correct explanation of the Assertion

C

If Assertion is True but the Reason is False.

D

If both Assertion & Reason are false.

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Which of the following statements is INCORRECT? I. Human kidneys can produce urine nearly six times more concentrated than the initial filtrate formed. II. An increase in body fluid volume can switch on the osmoreceptors and stimulate ADH. III. Substance like glucose, amino acids, Na^+ , etc., in the filtrate, are reabsorbed actively by the renal tubule whereas the nitrogenous wastes are absorbed by passive transport IV. Each kidney has nearly one million complex tubular structures called nephrons which are the functional units.

Under normal conditions which one is completely reabsorbed in the renal tubule ?

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Assertion :- Human kidneys can produce urine nearly four times concentrated than the initial filtrate formed. Reason :- Counter current mechanism helps to maintain a concentration gradient in the medullary interstitium.

Substances like glucose, amino acid NA^(+) etc. in the filtrate are reabsorbed by

Assertion :- In PCT all of the essential nutrient and 70-80 percent of electrolytes and water are reabsorbed. Reason :- PCT is lined by simple cuboidal brush border epithelium which increases the surface for reabsorption. (a) If both Assertion & Reason are True & the Reason is a correct explanation of the Assertion. (b) If both Assertion & Reason are True but Reason is not a correct explanation of the Assertion. (c) Assertion is True but the Reason is False. (d) If both Assertion & Reason are false.

Assertion :- Proximal convoluted tubule is lined by brush-bordered cuboidal epithelium. Reason :- PCT is main site of selective reabsorption of useful material from nephric filtrate.

ALLEN-HUMAN PHYSIOLOGY -I-EXERCISE-IV(Assertion & Reason)
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  7. Assertion :- ADH prevents diuresis. Reason :- ADH also affect the ki...

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  12. Assertion :- Analysis of urine helps in clinical diagnosis of many met...

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  13. Assertion :- Haemodialysis method is used in case of kidney failure. ...

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  14. Assertion :- Human kidneys can produce urine nearly four times concent...

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  15. Assertion :- Peritubular capillaries secrete substances in the convolu...

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  16. Assertion :- Ultrafiltration takes place in presence of effective filt...

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  18. Assertion : Diabetes insipidus is marked by excessive urination and to...

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  19. Assertion :- Antidiuretic hormone, increases the water permeability of...

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