Basal lamella

Last revised by Francis Deng on 11 Jun 2020

The basal lamella, also known as basal lamella of the middle turbinate, is an osseous lamella that separates the anterior from the posterior ethmoid sinuses 1.

Terminology

Internal anterior to posterior partitions of the ethmoid sinuses are called basal lamellae. According to a concept proposed by Killian, four or five (if supreme turbinate is included) basal lamellae make up the ethmoid sinuses 2.

The third basal lamella is the only complete basal lamellae, i.e. the only one that reaches the lamina papyracea from the lateral nasal wall 3. As such, the singular term basal lamella refers specifically to the third basal lamella.

The fourth basal lamella separates posterior ethmoid cells into posterior and postreme cells.

Updating… Please wait.

 Unable to process the form. Check for errors and try again.

 Thank you for updating your details.