True or False Write the T, in the space provided if the statement is correct and F, if it is incorrect.

1. There is a valve between each atrium and ventricle to prevent the blood from flowing backwards.
2. The heart has two pumps.
3. Carbon dioxide leaves your body through the lungs when you exhale.
4. When you breathe in or inhale, the diaphragm muscle relaxes.
5. When you breathe out or exhale, the diaphragm muscle contracts.
6. Ar pushes in from the outside wirere there is a lower air pressure.
7 Circulation means transportation or movement in circle,
8. The lower chamber is the atrium that receives blood coming in from the veins.
9. The upper chamber is the ventricle that forces the blood out into the arteries.
10. All of the muscle tissues of the heart do not contract at the same time.​