alveoli
anatomy
animal
blood
blood flow
blood supply
bodies
breathing
bronchiole
cavity
clinic
contours
diaphragm
disease
dog
drawing
entrails
hospital
human
illustration
incision
internal organs
isolated
larynx
lung
medical research
medicine
organ
poster
respiratory
respiratory system
respiratory system of dog
sample
schematic
scheme
silhouette
soft palate
tongue
trachea
treatment
veterinarian
veterinary
veterinary medicine
white background