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Ethmoidal Bulla
Respiratory System

Ethmoidal Bulla

Bulla ethmoidea

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The ethmoidal bulla is the largest air cell in the anterior ethmoidal cell group with the least amount of variability (Standring, 2020).

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Key Features/Anatomical Relations

The ethmoidal bulla is located posterior to the frontal recess and forms the roof of the middle meatus (which is also the location of drainage into the nasal cavity).


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


Standring, S. (2020) Gray's Anatomy: The Anatomical Basis of Clinical Practice. 42nd edn.: Elsevier Health Sciences.

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