Paranasal sinuses present at birth ?
a) Frontal and maxillary
b) Ethmoid and maxillary
c) Frontal and ethmoid
d) Sphenoid and ethmoid
Correct Answer - B
Ans. is ‘b’ i.e., Ethmoid and maxillary
Maxillary sinus → 4 Develop at birth; completely develop at 9
years
Ethmoidal sinus → Develop at birth; completely develop at late
puberty
Frontal sinus → Develop at 2 year; completely develop at
late adolescence
Spenoid sinus → Develop at 3-5 years; completely develop at
12-15 years