| A | B |
|---|
| circulatory system | transports oxygen, nutrients, and wastes through the body in the blood |
| alveoli | tiny air sacs in the lungs |
| capillaries | blood vessels so small that blood cells have to move through them in a singe file |
| trachea | the windpipe |
| heart | pumps blood through blood vessels |
| pancreas | produces a fluid that neutralizes stomach acid |
| platelets | cause blood to o clot when a blood vessel is cut |
| esophagus | a long tube that leads to the stomach |
| ureters | tubes that empty wastes into the bladder from the kidneys |
| arteries | vessels through which blood leaves the heart |
| saliva | moistens food and begins to break down starchy foods |
| sweating | eliminates excess body heat |
