In the human kidney,the labelled part where all the collecting ducts of nephrons open is
Correct answer: C. C
- A. A
- B. B
- C. C
- D. D
Explanation
Structure labelled C is renal pelvis. Collecting ducts of the nephrons open into the renal pelvis, where urine is collected before it moves to the ureter. So option C is correct. Renal cortex, vessel and ureter is not related to the opening of collecting ducts. So options A,B and D are incorrect.
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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.
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