Circulatory system

3. the largest artery in the body that carries blood from the heart to the rest of the body
5. the liquid part of blood that carries cells, nutrients, hormones, and waste products
6. a colorless gas that is essential for breathing and is carried by blood to all parts of the body
8. one of the two lower chambers of the heart that pump blood out to the lungs and the rest of the body
9. a flap in the heart or blood vessels that opens and closes to control the flow of blood
12. a tube-like structure in the body through which blood flows, including arteries and veins
13. move continuously through a system or area, like how blood moves through the body
14. a protein in red blood cells that carries oxygen from the lungs to the body's tissues
15. a thick mass formed when blood cells stick together to stop bleeding
16. system of organs and vessels that transport blood throughout the body

1. a tiny blood vessel where oxygen and nutrients are exchanged with tissues
2. a muscular organ that pumps blood throughout the body, supplying it with oxygen and nutrients
4. meeting with a doctor
7. carries blood back to the heart after it has delivered oxygen to the body
10. one of the two upper chambers of the heart that receives blood coming into the heart
11. a small cell fragment in the blood that helps with clotting to prevent bleeding