Renin is secreted by:
AJuxtaglomerular cells of afferent arteriole when BP/Na+ low
BStomach
CLiver
DAdrenal
Answer & Solution
Correct answer: A. Juxtaglomerular cells of afferent arteriole when BP/Na+ low
JG cells (modified smooth muscle of afferent arteriole): release renin in response to low renal BP, low Na+ at macula densa, or sympathetic stimulation. Renin cleaves angiotensinogen → angiotensin I → (via ACE) angiotensin II → vasoconstriction + aldosterone. RAAS pathway.
Related questions
In haemodialysis, wastes are removed from the patient's blood by the principle of:The condition of having high urea levels in the blood (a sign of kidney failure) is calledCO2 in the human body is primarily excreted by the:ADH (anti-diuretic hormone, vasopressin) acts to:Most of the GLUCOSE in the glomerular filtrate is reabsorbed in the:The Glomerular Filtration Rate (GFR) in a healthy adult is approximately:The juxtamedullary nephrons (~15%) are responsible mainly for:The functional unit of the human kidney is called the: