heart circulatory system

https://www.youtube.com/watch?v=GbttJ-5do9M
https://www.youtube.com/watch?v=RiYOuI7iyp8

I thought of how I use to be able to learn things when I did not understand them and I thought of these videos and it makes a lot more sense now that iv watched these and wrote the paragraph below after watching them to explain what I have learned!!



our heart sends blood two ways every time, the blue blood has little oxygen it comes from your heart and gets sent to your lungs where it recharges your body the red oxygen rich blood gets blood sent back to your heart and then to the rest of your body. our heart has 4 chambers and has valves to block each chambers to make it a separate one the nerves on the right side of your heart send signals and make your heart pump those are called your sinoatrial nerves. when your heart pumps it leaves the left ventricle and goes to up to your system then to your right atrium then to your right ventricle then up to your lungs then down to your left atrium and then finally down to your right ventricle again and repeats it self. a blood clot is when the blood gets blocked and that can cause a heart attack.