The flow of blood through the heart fully explained?

Blood enters the heart through two large veins the inferior and the superior vena cava carrying deoxygenated blood from the body into the right atrium. Blood flows from the right atrium into the right ventricle through the tricuspid valve.

i'm pretty sure questions like these aren't allowd.   but, sure.   i can and talk : ))

teens need 8-10 hours of sleep. it kind of depends on what time you get up. but prob around 10 or 11 p.m. or 11 or 11: 30 p.m.