Across
- 3. -the passage from the mouth to the larynx and esophagus
- 5. - the tube that connects the larynx to the lungs
- 7. circulation - the blood from the heart to the lungs and back to the heart
- 9. -any of the tiny air sacs of the lungs where oxygen and carbon dioxide are exchanged
- 10. pressure - the force that blood exerts on the walls of the arteries
- 12. - a collection of the organs that transport blood through out the body
Down
- 1. - in biology a vessel that carries blood to the heart
- 2. - one of the two tubes that connect the lungs with the trachea
- 4. attacks - heart muscle cells do not work
- 6. -a tiny blood vessel that allows an exchange between blood and cells in tissue
- 8. circulation -the flow of blood from the heart to all parts of the body and back to the heart
- 11. - the area of the throat that contains the vocal cords and produces vocal sounds
- 13. - a blood vessel that carries blood away from the heart to the body's organs