Respiratory System

5. Around 6 million of these in the lungs. They are tiny, airs sacs, which allow gaseous exchange
7. This is the process where gas move from a high concentration to a low concentration
10. Located in the throat area, it is the 'voice box'
12. This is 'wind pipe. It is made up of rings of cartilage
13. Two large organs located inside the ribs. They inflate and deflate with gas.

1. This is the gas needed by the body. It makes up 21% of inhaled air
2. This is the tough material which keeps the trachea open
3. The two _ _ _ _ _ _ _ membranes are located on the inside and outside walls of the lungs. They allow the lungs to inflate and deflate easily
4. The pleural _ _ _ _ _ _ is the name given the space between the parital and visceral membranes
6. The cilla in the nose and nasal cavity, traps _ _ _ _, bacteria and other debris
8. The _ _ _ _ and mouth are the two parts where air enters the body
9. The respiratory _ _ _ _ _ _ is the collection of organs which allows us to survive
11. what is the waste gas which is exhaled from the body. _ _ _ _ _ _ dioxide