Reabsorption of water by countercurrent multiplier mechanism takes place at:
Correct answer: D. Loop of Henle
- A. Proximal Tubule
- B. Distal Tubule
- C. Collecting Duct
- D. Loop of Henle
Explanation
The interstitial fluid of kidney is gradually concentrated from cortical to medullary part ,thus inner medulla is highly concentrated with the presence of urea and through a mechanism called counter current multiplier. This mechanism causes gradual osmotic outflow of water from filtrate back to kidney as it passes downward in the descending loop of henle. Hence option D is right.
This question appeared on the UHS MDCAT 2010 paper, which you can sit online with every answer explained.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
About Kidney and Urinary System
The kidney and urinary system remove nitrogenous wastes, regulate water and ion balance, and help maintain blood pH through filtration, selective reabsorption and secretion. Questions cover nephron structure, ultrafiltration, the loop of Henle, collecting ducts, urine formation and the roles of ADH and aldosterone, while distinguishing excretion from egestion.
Practise Homeostasis
705 free Homeostasis MCQs from Biology, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Biology questions like this
Biology is on 8 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Kidney and Urinary System questions
The muscles that control urine in bladder are known as:
Technique used for non-surgical removal of kidney stone is called:
Aldosterone plays role in:
Antiduretic hormone helps in reabsorption of water by changing permeability of:
During peritoneal dialysis, dialysis fluid is introduced into which part of the human body?
Aldosterone helps in conservation or active absorption of: