etmoidabihålorna
The ethmoidal sinuses, known in Swedish as etmoidabihålorna, are a complex group of air-filled cavities located within the ethmoid bone. This bone is situated between the eyes and forms part of the nasal cavity and the anterior cranial fossa. The ethmoidal sinuses are unique because they are not a single cavity but rather a collection of small, thin-walled cells, typically numbering between three and eighteen on each side. These cells are further divided into anterior, middle, and posterior groups, each with its own drainage pathway into the nasal cavity.
The anterior ethmoidal cells usually drain into the anterior part of the middle meatus, while the middle
The ethmoidal sinuses play a role in humidifying and warming inhaled air, as well as contributing to