副鼻腔 paranasal sinuses
Fig. 10.4a Nasal cavity and paranasal sinuses.
Coronal section showing the relationship between the nasal cavity and ethmoid and maxillary sinuses. The frontal (anterior) and sphenoid (posterior) sinuses are not
shown in this plane of section. The surface area of the respiratory mucosa
is increased by long curved turbinate bones arising from the lateral walls
of the nasal cavity, and by the paranasal sinus system. Note the olfactory
epithelium and its proximity to the olfactory nerves and bulbs.
