Across
- 3. What is the biggest organ in the respiratory system
- 5. After the air leaves the nasal cavity, it goes down the ...
- 8. Consists of ribs and intercostal muscles.
Down
- 1. When we breath in, air enters the respiratory system through the ... ... in the nose
- 2. Each bronchus splits into two ...
- 4. A cavity that is separated from the abdominal cavity by a muscular sheet known as ...
- 6. What is inside of the lungs that can gas exchange where o² enters the blood and CO² exits from the blood
- 7. The trachea branches into 2 ... with each entering the right and left lungs respectively.