Ethmoid bulla
Ethmoid bulla | |
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Details | |
Identifiers | |
Latin | bulla ethmoidalis |
TA98 | A06.1.02.026 A02.1.07.015 |
TA2 | 3150 |
FMA | 57487 |
Anatomical terminology |
The ethmoid bulla (or ethmoidal bulla) is an elevation on the lateral wall of the middle meatus of the nose. It is produced by middle ethmoidal cells.[citation needed] It develops during the first trimester of gestation, and varies significantly based on the size of air cells.
Structure[]
The ethmoid bulla is on the lateral wall of the middle meatus of the nose.[1] It is produced by middle ethmoidal cells,[citation needed] which are contained within this bulla, and open on or near to it (often just below it).
Just below the bulla is a curved fissure, the hiatus semilunaris. The maxillary sinus also opens below the bulla.[1][2] It is the largest among the middle ethmoidal cells.[citation needed]
Development[]
The ethmoid bulla begins to develop between 8 weeks and 12 weeks of gestation.[2]
Variation[]
The size of the bulla varies with that of its contained cells. The bulla may be a pneumatised cell or a bony prominence found in middle meatus.
References[]
- ^ a b Gray, Henry; Lewis, Warren H. (1918). Anatomy of the nose of the Human Body (20th Edition). p. 195.
- ^ a b Wang, Rong-Guang; Jiang, Si-Chang (1997-01-01). "The Embryonic Development of the Human Ethmoid Labyrinth from 8-40 Weeks". Acta Oto-Laryngologica. 117 (1): 118–122. doi:10.3109/00016489709118002. ISSN 0001-6489.
- Nose
- Anatomy stubs