Across
- 4. a flap of tissue that covers the opening to the trachea in order to divert food & liquids.
- 8. The human heart consists of this many chambers?
- 10. The lungs take in this gas from the air we breath.
- 14. A.k.a. "the windpipe"
- 15. air passages inside the lungs that branch off like tree limbs from the bronchi.
- 18. blood vessels that lead away from the heart.
- 20. The lungs help us expel this gas from our blood stream by breathing it out.
- 22. The liquid that flows through our veins and arteries.
- 23. A pair of breathing organs located with the chest which remove carbon dioxide from and bring oxygen to the blood.
- 24. This muscle/organ helps pump blood and power the circulatory systems.
Down
- 1. tiny air sacs in the lungs from which gasses are exchanged.
- 2. is the main artery that carries blood away from your heart to the rest of your body.
- 3. blood vessels that lead back to the heart.
- 5. The hollow tube inside the neck that starts behind the nose and ends at the top of the trachea.
- 6. The ______ artery carries blood away from the heart to the lungs to get oxygenated.
- 7. The large air passages that lead from the trachea to the lungs.
- 9. The ______ atrium is the first chamber of the heart that un-oxygenated blood enters.
- 11. The lower 2 chambers of the heart are known as the left & right ___________?
- 12. The "Voice Box" is triangularly shaped thing just below the Pharynx.
- 13. ______ blood cells carry the oxygen throughout the circulatory system
- 16. The heart is made up of this type of muscle?
- 17. The upper 2 chambers of the heart are known as the left & right __________?
- 19. This Muscle powers the Respiratory System located near the bottom of the rib cage.
- 21. Humans breath in oxygen either through our mouth or through our _____.