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Biology
Excretory Products and their Elimination
60 questions from 34 papers, each with its answer.
- 60 questions
- 34 papers
- 1.7% of Biology
Regulation of kidney function – ANF and RAAS
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A decrease in blood pressure/volume will not cause the release of
ANF is released when blood pressure rises.
A decrease in blood pressure/volume stimulates the release of renin, aldosterone and ADH, while an increase in blood pressure/volume stimulates the release of atrial natriuretic factor (ANF). ANF causes vasodilation and inhibits the RAAS (renin–angiotensin–aldosterone system), decreasing blood volume/pressure.
Loop of Henle – permeability
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Which of the following statements is correct?
Ascending limb is water-impermeable.
The descending limb of the loop of Henle is permeable to water but impermeable to electrolytes, while the ascending limb is impermeable to water but permeable to electrolytes.
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