abdomen
air
airflow
alveolus
anatomy
atmospheric pressure
ballon
blood
bronchus
capillaries
carbon dioxide
cavity
chest
contracts
cycle
diaphragm
differences
education
equilibrium
esophagus
exhale
flow
force
human
illustration
inhale
isolated
larynx
layer
lung
medical
medicine
membrane
muscle
nose
parietal
pharynx
plaural
pleura
pressure
relax
respiration
respiratory
ribs
science
surface
thoracic
tissue
volume