How do the kidneys regulate high blood pressure and low blood pressure? I need examples of each…PLEASE

How do the kidneys regulate high blood pressure and low blood pressure? I need examples of each…PLEASE

According to 2n^2, potassium should have 18 electrons in 3rd shell. But it does not and the electrons
move into the 4th shell. Please explain.

My husband has always had high blood pressure but recently it has jumped even more. As he’s only 22 and I’m not planning on losing him due to that anytime soon I have decided to change our eating habits. I’m trying to put new meal plans together and would love suggestions for breakfast, lunch, and dinner that would be blood pressure friendly.

WHATS THE SCIENTIFIC REASON?

My psychiatrist told me that if my blood pressure stays high he will not want to prescribe my Adderall anymore. Thing is, I’ve always had high blood pressure, it aint the Adderall doc. But he says he has a hard time prescribing it when it tends to increase blood pressure. I have two days til my next visit with him to fix this. I still smoke, I still drink, I still eat salty food…what’s a boy to do?

Thanks!!

An associate of mine of normal weight and blood pressure, got pregnant and developed high blood pressure throughout her pregnancy. The moment she gave birth, the BP went back to normal. The doctor told her she should never get pregnant again. Against his advice, she got pregnant again and the high blood pressure not only came back but it stayed and has been with her since. Still a fairly normal weight, her BP can be normal one day and way the next. Any ideas on what could be causing this? It even has her doctors stumped.

Also the medications to treat these "conditions"