Sinus Drainage Anatomy

Sinus drainage can be worsened by a number of factors such as. A thin wall called.

Applied Anatomy Of Cavernous Sinus Epomedicine

Most individuals have four paired cavities located in the cranial bone or skull.

Sinus drainage anatomy. According to their location the two pairs of anterior and middle ethmoid sinuses drain into the middle nasal meatus the semilunar hiatus and the ethmoid bulla respectively 2 while the posterior ethmoid sinus drains into the superior meatus 9. The resulting pressure can be intolerable for many people. Sinus anatomy in common usage sinus usually refers to the paranasal sinuses which are air cavities in the cranial bones especially those near the nose and connecting to it.

This feature is not available right now. Normally these structures help humidify and filter air. There are three ethmoidal sinuses.

Please try again later. Normally the sinuses are empty except for a thin layer of mucus. They empty into the nasal cavity at different places.

As long as your sinuses are draining properly the increase in mucus isnt a problem although it can be annoying. The inside of the nose has ridges called turbinates. The sphenoid sinuses drain out onto the roof of the nasal cavity.

The real problems start when the passages become blocked or fail to let the sinuses drain effectively. Anterior middle and posterior. The relationships of this sinus are of clinical importance the pituitary gland can be surgically accessed via passing through the nasal roof into the sphenoid sinus and through the sphenoid bone.

Drainage Of The Paranasal Sinuses And Associated Structures