The juxtaglomerular apparatus _.
A) is found where the most distal part of the ascending limb of the nephron loop touches the afferent arteriole
B) contains a region of chemoreceptor cells called the macula densa in the distal nephron loop
C) is found where the most distal part of the ascending limb of the nephron loop touches the afferent arteriole, contains granular cells in the afferent arteriole that sense blood pressure, and contains a region of
Chemoreceptor cells called the macula densa in the distal nephron loop
D) contains granular cells in the afferent arteriole that sense blood pressure

Question

Quizplus · Accepted Answer

The juxtaglomerular apparatus is indeed located where the most distal part of the ascending limb of the nephron loop (also known as the thick ascending limb) touches the afferent arteriole. It contains granular cells (also known as juxtaglomerular cells) in the afferent arteriole that are responsible for sensing blood pressure and secreting renin in response to low blood pressure. Additionally, it includes the macula densa, a group of chemoreceptor cells located in the distal nephron loop, which senses sodium chloride concentrations and signals the granular cells to release renin when needed.

The Juxtaglomerular Apparatus _