(Solved): The juxtaglomerular apparatus (JGA) is a specialized structure in the mammalian kidney. Answer one ...

The juxtaglomerular apparatus (JGA) is a specialized structure in the mammalian kidney. Answer one best: Only-10\% of glomeruli possess a JGA. When the macula densa senses a fall in intratubular sodium delivery it sends a signal to increase renin release from the granulat cells. During activation of the JGA a signal is passed directly from the macula densa to the vasa recta. The JGA is the site of erythropoletin release. Question 17 1 pts The hormone aldosterone has the following characteristics and actions: Choose one best answer. Aldosterone increases hydrogen ion secretion in the proximal tubule and descending limb of the loop of Henle. Aldosterane is released in response to a high sodium intake. Aldosterone increases potasslum secretion into the collecting duct. Aldosterone increases sodium excretion