4 marksThe Kidney, Excretion and Osmoregulation

CAPE Biology Unit 2 · 2013 · Paper 2 · Question 5(b)(i)

Briefly describe the structure of a collecting duct and explain its role in kidney function.

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5(a)(i)Give a brief explanation of the concept of 'homeostasis'.[2 marks]
5(a)(ii)Discuss the roles of a receptor, a set point, and an effector in a homeostatic system.[6 marks]
5(b)(ii)Explain how antidiuretic hormone (ADH) regulates the function of collecting ducts.[3 marks]

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