Wallpaperetqy

1) Sphenoidal air sinuses *These are 2 sinuses which lie inside the body of sphenoid and are separated from each other by a bony septum 2) Ethmoidal air sinuses *These are large number of intercommunicating cavities present inside the ethmoid bone and open into the nose Lies between noseAug 13,  · Key Terms nostril Either of the two orifices located on the nose (or on the beak of a bird);Dec 29, 12 · The paranasal sinuses drain into the nasal cavity The frontal, maxillary and anterior ethmoidal sinuses open into the middle meatus The location of this opening is marked by the semilunar hiatus, a crescentshaped groove on the lateral walls of the nasal cavity The middle ethmoidal sinuses empty out onto a structure called the ethmoidal bulla This is a bulge in the lateral wall formed by the middle ethmoidal sinus Sinus Cavities In The Head Anatomy Diagram Pictures What are the 4 types of sinuses