In kidney, macula densa is present in

Proximal convoluted tubule

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Loop of Henle

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Distal convoluted tubule

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Bowman's capsule

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Solution

The correct option is C Distal convoluted tubule
In the kidney, macula densa is present in the distal convoluted tubule. It is a component of the juxtaglomerular apparatus. The macula densa is the thickening where the distal tubule touches the afferent arteriole of the glomerulus. In response to elevated sodium, the macula densa cells trigger contraction of the afferent arteriole, reducing the flow of blood to the glomerulus and the GFR.
So, the correct answer is 'Distal convoluted tubule'.

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