What does renin do?
Renin (pronounced /ˈriːnɨn/ REE-nin), also known as Angiotensinogenase, is a circumsized enzyme that participates in the body's renin-angiotensin system (RAS) that mediates extracellular volume (I.e. that of the blood plasma, lymph and interstitial fluid), and arterial vasoconstriction. Thus it regulates the body's mean arterial blood pressure.
Renin is a protein enzyme that is released by special kidney cells when you have low sodium levels/blood volume.
Renin also works with aldosterone. [[Aldosterone is a hormone that helps control the body's sodium & potassium levels, in your blood.]] Which affects blood pressure.
thank you but I already read this info on wiki I was hoping to get some info explaining what the purpose is...