NEET Zoology Urine Formation MCQ Question
Urine formation involves three main processes namely, glomerular filtration, reabsorption and secretion, that takes place in different parts of the nephron. The first step in urine formation is the filtration of blood, which is carried out by the glomerulus and is called glomerular filtration. Which statement is not correct for it?
(i) On an average, 1100-1200 ml of blood is filtered by the kidneys per minute.
(ii) The glomerular capillary blood pressure causes filtration of blood through 5 layers.
(iii) The epithelial cells of Bowman's capsule called podocytes.
(iv) Podocytes are arranged in an intricate manner so as to form filtration slits or slit pores.
(v) Blood is filtered so that almost all the constituents of the plasma except the corpuscles pass on to the lumen of the Bowman's capsule.
(vi) Glomerular filtration is considered as a process of ultra filtration.
(v) and (vi)
(ii) and (v)
(iv) and (vi)
(i) and (ii)
Correct Answer
Detailed Explanation
Statement (ii) is incorrect because filtration occurs through 3 layers, not 5. Statement (i) is correct, but the average filtration rate is not 1100-1200 ml per minute; this is the blood flow rate to the kidneys.
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