1.
Entry point for air into the respiratory system
2.
Windpipe that carries air to the lungs
3.
Two main air tubes entering each lung
4.
Smaller air tubes branching inside the lungs
5.
Tiny air sacs where gas exchange occurs
6.
Organs that contain bronchi bronchioles and alveoli
7.
Muscle sheet that changes thorax volume during breathing
8.
Muscles between ribs that move the ribcage in breathing
9.
Bones that protect the lungs and help change thorax volume
10.
Gas needed for aerobic respiration
11.
Gas produced in respiration and exhaled
12.
Solution that turns cloudy in the presence of carbon dioxide
13.
Breathing in air into lungs
14.
Breathing out air from lungs
15.
Chemical process releasing energy from glucose
16.
Respiration that uses oxygen to release a lot of energy
17.
Substance made in muscles during anaerobic respiration
18.
Organelle in cells where aerobic respiration occurs
