The Kidney (OCR A-Level Biology A): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
How much filtrate do kidneys process daily vs urine produced?
How much filtrate do kidneys process daily vs urine produced?
180L filtrate; 1-2L urine
Which kidney region contains the glomeruli and DCT?
Which kidney region contains the glomeruli and DCT?
Cortex
What feature of PCT cells provides massive surface area for reabsorption?
What feature of PCT cells provides massive surface area for reabsorption?
Brush border of microvilli
Why is blood pressure high in the glomerulus?
Why is blood pressure high in the glomerulus?
Efferent arteriole narrower than afferent
What molecular mass do proteins need to be retained by the basement membrane?
What molecular mass do proteins need to be retained by the basement membrane?
Above 69000
How does glucose enter PCT cells from filtrate?
How does glucose enter PCT cells from filtrate?
Symport with Na+ down Na+ gradient
What percentage of filtrate volume is reabsorbed by the end of the PCT?
What percentage of filtrate volume is reabsorbed by the end of the PCT?
99%
What is the ascending limb of the loop of Henle impermeable to?
What is the ascending limb of the loop of Henle impermeable to?
Water
What does cAMP trigger in collecting duct cells during ADH action?
What does cAMP trigger in collecting duct cells during ADH action?
Vesicles with aquaporin 2 fuse to membrane
What does aldosterone increase synthesis of in DCT cells?
What does aldosterone increase synthesis of in DCT cells?
Na+/K+ antiport carriers