Structure/Morphology
The agger nasi cells are the anterior-most ethmoidal cells, which are almost always present (90%) (Standring, 2020).
Related parts of the anatomy
Key Features/Anatomical Relations
The agger nasi cells lie anterolateral and inferior to the frontal recess and above the middle turbinate. They sit medial to the lacrimal sac, below the frontal sinus.
Function
The ethmoidal cells contribute to adding resonance to the voice and decreasing the overall weight of the skull.
List of Clinical Correlates
- Frontal sinusitis
- Endoscopic sinus surgery
References
Standring, S. (2020) Gray's Anatomy: The Anatomical Basis of Clinical Practice. 42nd edn.: Elsevier Health Sciences.
