(a) (i) They are more permeable to water than capillaries.
ii) Z has a wider lumen than N (acc converse)
iii) This increases high blood pressure within the glomerulus.
(b) - One cell thick to reduce distance for reabsorption.
- Cells have numerous mitochondria to produce energy for active transport ; have microvilli to increase surface area for
re-absorption ; Highly coiled to reduce spread of flow to increase time available for reabsorption.
(c) A condition where fluids flow in opposite directions / glomerular filtrate flow opposite direction to blood in capillaries;
parts T and Q.
sharon kalunda answered the question on March 21, 2019 at 13:41
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