what is hypertension and what are some factors that affect it?

describe the three formed elements found in blood.

what important components are dissolved in the plasma of blood?

describe the steps of hemostasis.

if someone has blood type a+, what types of antibodies will be in their blood?

what type of blood should a person with o- receive from a donor?

if your boyfriend is cheating on you, my best advice to you is to dump him, he's only going to drag you down. and if you do, don't fret there's plenty better that know how to treat a person right. i mean honestly, the whole point of a romantic relationship is love, and if you love someone you aren't going to cheat on them. i do believe in second chances, but why would he cheat in the first place? i personally feel that if someone cheats, they ruin any chance they wanted/had with you. i wish you the best of luck with this, hang in there.