epiglottis
inhalation
bronchi
trachea
alveolus
Sinus
cilia
bronchioles
expiration
diaphragm
muscle separating the chest and the abdomen
windpipe
Air-filled cavity that provides resonance for voice
thin hairs attached to the mucus membrane epithelium lining the respiratory tract
lid-like piece of cartilage covering the larynx
branches of the trachea leading into lungs
the act of breathing air out
air sacs in the lungs
small branches of the tubes leading into the lungs
the act of breathing air in