renin

Examples of renin in the following topics:

• Other Hormonal Controls for Osmoregulation

  • The renin-angiotensin-aldosterone system (RAAS) stabilizes blood pressure and volume via the kidneys, liver, and adrenal cortex.
  • The renin-angiotensin-aldosterone system (RAAS) is a hormone system that regulates blood pressure and water (fluid) balance .
  • Defective renin production can cause a continued decrease in blood pressure and cardiac output.
  • Its actions suppress the actions of aldosterone, ADH, and renin.
  • The renin-angiotensin-aldosterone system increases blood pressure and volume.

• Hormonal Regulation of the Excretory System

  • When blood pressure drops, the renin-angiotensin-aldosterone system (RAAS) is activated.
  • Cells in the juxtaglomerular apparatus, which regulates the functions of the nephrons of the kidney, detect this and release renin.
  • Renin, an enzyme, circulates in the blood, reacting with a plasma protein produced by the liver called angiotensinogen.
  • When angiotensinogen is cleaved by renin, it produces angiotensin I, which is then converted into angiotensin II in the lungs.
  • Angiotensin II, in turn, is formed when renin cleaves angiotensin.

• Organs with Secondary Endocrine Functions

  • ANP also reduces the amounts of renin released by the kidneys and aldosterone released by the adrenal cortex, further preventing the retention of water.
  • Renin, released in response to decreased blood volume or pressure, is part of the renin-angiotensin-aldosterone system that leads to the release of aldosterone.

• Epinephrine and Norepinephrine

  • These hormones go one step further and trigger the renin-angiotensin-aldosterone system, the hormone system that regulates blood pressure and water (fluid) imbalance.

• Adrenal Glands

  • If sodium levels are low in the blood, the kidney secretes more renin, an enzyme that stimulates the formation of angiotensin from a molecule made from the liver.