MCQ
$A$ fall in the $GFR$ rate activates the
  • $JG$ cells to release reni
  • B
    $JG$ cells to release aldosterone
  • C
    $JG$ cells to release epinephrine
  • D
    $JG$ cells to release nor-epinephrine

Answer

Correct option: A.
$JG$ cells to release reni
a
The kidneys have built in mechanisms for the regulation of glomerular filtration rate. One such efficient mechanism is carried out by juxta glomerular apparatus $(JGA)$, $JGA$ is the special sensitive region formed by cellular modification in the distal convoluted tubule and the afferent arteriole at the location of their contact. A fall in $GFR$ can activate the $JG$ cells to release renin, which can stimulate the glomerular blood flow and there by $GFR$ back to normal

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