True about Eustachian tube -
“Eustachian tube serves to ventilate the middle ear and exchange nasopharyngeal air in the middle ear. In children, ET is relatively narrow. It is prone to obstructionQ when mucosa swell in response to infection or allergic challenge and it results in middle ear effusion”
Length is 36 mm in adults and 1.6 mm to 3 mm in children
Higher elastin content in adults
Ventilatory function of ear better developed in infants
More horizontal in adults