thank you but I already read this info on wiki I was hoping to get some info explaining what the purpose is...
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.Maths & science
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.Do I need science for hairdressing?