Across
- 2. Each of these organs contains one bronchus, many bronchioles, and 300 million alveoli
- 4. The aorta is the largest of this type of blood vessel which carries oxygen-rich blood to all the parts of the body
- 6. The largest vein in the body
- 7. The smallest of the body's blood vessels
- 9. The opening and closing of these mechanisms in the heart controls the flow of blood and creates the sound of a heart beat
- 12. This type of person often has a lower resting heart rate
- 13. A synonym for 'oxygen poor'
- 16. A flap of cartilage that closes to prevents liquids and solids from being inhaled into the lungs
- 17. The result of broken blood vessels near the surface of the skin
- 18. During inhalation, the _______ Cavity is where air is filtered, heated, and humidified
- 20. An airway also known as the voice box, responsible for sound production
- 21. _______ Dioxide is a waste product the body expels during exhalation
- 22. A system of the body tasked with delivering oxygen-rich blood to all parts of the body (with one small exception)
Down
- 1. AKA 'heart rate'
- 3. The main airway of the body which is also known as the windpipe
- 5. A system of the body tasked with providing oxygen to the bloodstream through the process of respiration.
- 8. The many microscopic balloon-shaped structures where oxygen is passed from the lungs into the blood are known as _________
- 10. This four-chambered organ is also an important muscle
- 11. A type of blood vessel which carries oxygen-poor blood to the heart
- 14. The chamber of the heart known as the Left _________ receives oxygenated blood from the lungs
- 15. This small body part is remarkable for being the only part of the body not to receive oxygen through the blood
- 19. Either one of the small, upper chambers of the heart is referred to as an _________