NEET Zoology Urine Formation MCQ Question
Which of the following combinations correctly describe the functions and characteristics of the nephron in urine formation?
A) The proximal convoluted tubule is primarily responsible for reabsorption; B) The loop of Henle helps maintain osmolar gradient; C) The collecting duct does not participate in water reabsorption; D) Juxta-glomerular apparatus regulates GFR.
A) The proximal convoluted tubule is primarily responsible for reabsorption; B) The loop of Henle helps maintain osmolar gradient; C) The collecting duct allows significant water reabsorption; D) Juxta-glomerular apparatus is involved in urine concentration.
A) The distal convoluted tubule is the main site of reabsorption; B) The loop of Henle is responsible for the secretion of urea; C) The collecting duct aids in maintaining blood pH; D) Juxta-glomerular apparatus increases GFR during dehydration.
A) The proximal convoluted tubule secretes urea; B) The loop of Henle is involved in the counter current mechanism; C) The collecting duct does not affect urine concentration; D) Juxta-glomerular apparatus is located in the renal pelvis.
Correct Answer
Detailed Explanation
The proximal convoluted tubule is indeed the primary site for reabsorption, the loop of Henle helps maintain the osmolar gradient, and the collecting duct does allow for significant water reabsorption. The juxta-glomerular apparatus regulates GFR, not urine concentration.
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