what does the JGA release
juxtaglomerular apparatus (JGA). Consist of the juxtaglomerular cells of an afferent or efferent arteriole and the. macula. densa. cells of the distal convoluted tubule. The JGA helps regulate. blood pressure and the rate of blood filtration by the kidneys.Renin is released to the blood by JGA cells due to decreased renal blood flow or perfusion.Renin converts a plasma protein (angiotensinogen) into angiotensin I Angiotensin-Converting Enzyme (ACE) in the lungs convertes Angiotensin I into Angiotensin II.ells of the distal convoluted tubule. The JGA helps regulate. blood pressure and the rate of blood filtration by the kidneys. Renin is released to the blood by JGA cells due to decreased renal blood flow or perfusion.