気管
air
anatomical
anatomy
background
biological
biology
body
breath
breathe
breathing
bronchi
bronchial
bronchus
cavity
chest
cord
diagram
drawing
graphic
human
illustration
isolated
lobe
lung
lungs
medical
medicine
model
organs
orgran
oxygen
person
pipe
respiration
respiratory
sacks
science
system
tissue
trachea
vital
white