Respiratory system

3. Tiny air sacs at the end of the bronchioles.
4. Two small muscles that have a moist covering, within the larynx.
6. A protein found inside red blood cells that transports carbon dioxide out of the body and oxygen from bodily tissues and organs.
8. The airway that connects the bronchi to the larynx (voice box).
9. A tiny branch of air tubes in the lungs.
11. A process by which gases travel from a high-pressure region to a low-pressure one.
13. The flap that covers the trachea during swallowing so that food does not enter the lungs.
16. The region of the throat where the vocal chords are located and where breathing, swallowing, and talking take place.

1. Bringing oxygen into our bodies and sending carbon dioxide out.
2. Cellular respiration is a metabolic pathway that uses glucose to produce adenosine triphosphate an organic compound the body can use for energy.
5. Maintaining the trachea's mechanical stability.
7. A large airway that leads from the trachea to a lung.
10. One of two organs in the chest that eliminates carbon dioxide from the body and provides oxygen to it.
12. Process or act of breathing in, taking air and sometimes other substances into your lungs.
14. The neck's internal hollow tube, which begins behind the nose and terminates at the top of the trachea and oesophagus.
15. Muscles between the ribs.