Meanings:

1.  Aerobic respiration : breakdown of glucose occurs with the use of oxygen.

2.  Anaerobic respiration: breakdown of food in the absence of oxygen.

3.  Breathing rate: number of times a person breathes in a minute.

4.  Cellular respiration: breakdown of food in the cell with the release of energy.

5.  Diaphragm: a large muscular sheet that in the chest cavity.

6.  Exhalation: giving out of air during respiration.

7.  Gills: breathing organ in fish.

8.  Inhalation: taking in air.

9.  Spiracles: small opening on the sides of the body of cockroach.

10.  Tracheae: network of air tubes in insects.