SOMEONE PLS HELP, ILL GIVE BRAINLIEST AND 50 POINTS PLS I NEED ALL ANSWERS

also dont mind the missing questions, i already answered those

1) Your heart provides your body with __________ and _____________ it needs. It also carries away ___________.

2) Your heart fills with blood. Then its muscle ___________ to squirt the blood along. When the heart ___________, it squeezes and sends the blood to other parts of your body.


4) The heart has several valves. What is their function (job)? __________________________

5) Think about why blood flowing backwards in the body would not be good for you. Give one reason it would be a bad thing to happen.____________________________________

6) What is the main difference between arteries and veins? _____________________________

7) What is the main waste material that the blood picks up to be removed from the body? _____________________