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Question

Filtration of the blood takes place at
(a) PCT (b) DCT
(c) Collecting ducts (d) Malpighian body.

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Solution

Filtration of blood takes place at the Malpighian body.
Malphigian body or corpuscle comprises of glomerulus and Bowman's capsule Filtration of blood takes place in glomerulus through glomerular filtration.
IN which blood enters in the glomerules through an afferent arteriole and leaves itthroughh efferent arteriole.

Proximal Convoluted tubule (PCT). Is lined by cuboidal epithelium cells bearing brush border and allows the reabsorption of salts by active transport.
Distal Convulated Tubule (DCT), Allows conditional reabsorption of Na+ and water and selective secretion of H,K+NH3 to maintain pH and Na- K balance in the blood. \

Collecting Duct extends from the cortex of kidney to the inner part of medulla. Large amount of water is reabosorbed from this region to produce the concentracted urine.


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