NEET Biology question
Complete the following paragraph by selecting the option that correctly fills the blanks (i)-(iv). The kidneys have built-in mechanisms for the regulation of glomerular filtration rate. One such efficient mechanism is carried out by a special sensitive region, (i), formed by cellular modifications in the (ii) and the (iii) at the location of their contact. A fall in GFR can activate the JG cells to release (iv), which can stimulate the glomerular blood flow and thereby bring the GFR back to normal.
Solution
As per NCERT, this sensitive region is the juxtaglomerular apparatus (JGA), formed by cellular modifications at the point of contact between the distal convoluted tubule
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