Trachea is broken down further into
main bronchi
lobar bronchi
segmental bronchi
bronchioles
Bronchioles
segmental
terminal
respiratory
Structures of the hilum
bronchi
pulmonary artery (2)
pulmonary vein (4)
bronchial artery
tracheobronchial lymph nodes
what causes steeple sign
extensive inflammation and edema of the subglottic region
Cricoid cartilage
More than 75% of retropharyngeal abscess occur when?
in kids less than 5
older in immunocompromised or diabetic
thumb sign
due to enlarged epiglottis
seen obviously in epiglottis