The vasa recta arises from
AThe efferent arteriole of juxtamedullary nephrons
BThe afferent arteriole of cortical nephrons only
CThe renal vein at the medullary boundary
DThe collecting duct system in deep cortex
Answer & Solution
Correct answer: A. The efferent arteriole of juxtamedullary nephrons
Vasa recta = the long, hairpin capillaries arising from the EFFERENT arterioles of juxtamedullary nephrons. They run alongside the long Henle loops and form the blood-side limb of the counter-current exchange.
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: