What is Bulla Ethmoidalis?
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. It develops during the first trimester of gestation, and varies significantly based on the size of air cells.
Where is the Bulla Ethmoidalis located?
Surgical Anatomy of the Nose, Septum, and Sinuses The first ethmoid cell encountered is the ethmoid bulla, which is located posterior to the semilunar hiatus and anterior to the basal lamella. It is a rounded structure that is attached laterally to the lamina papyracea.
How is Bulla Ethmoidalis formed?
It is formed by pneumatization of the bulla lamella and its degree of pneumatization is variable. In its most extreme form (giant ethmoid bulla), it may fill the entire middle meatus. Failure of pneumatization of the ethmoid bulla is termed torus ethmoidalis 3. It usually opens in the retrobullar recess.
Which sinuses are not paranasal sinuses?
Paranasal sinuses are a group of four paired air-filled spaces that surround the nasal cavity. The maxillary sinuses are located under the eyes; the frontal sinuses are above the eyes; the ethmoidal sinuses are between the eyes and the sphenoidal sinuses are behind the eyes.
What drains into ethmoid bulla?
Hiatus semilunaris receives drainage from the ethmoid bulla. The maxillary sinus and often the frontal sinus, depending on the superior attachment of the uncinate process, drain into the ethmoid infundibulum.
What is a bulla in the lung?
A giant bulla is a complication of emphysema. In areas of the lung completely damaged by the disease, air pockets can develop. These areas threaten the patient’s health not only because of the underlying emphysema. As an air pocket—a bulla—grows, it takes up space in the chest cavity and can encroach on the lungs.
How do you clear your paranasal sinuses?
A warm compress on your nose and forehead may help relieve the pressure in your sinuses. Rinse out your nasal passages. Use a specially designed squeeze bottle, saline canister or neti pot to rinse your nasal passages. This home remedy, called nasal lavage, can help clear your sinuses.
How do you drain a sphenoid sinus?
3. Sphenoid/ethmoid sinus massage
- Place your index fingers on the bridge of your nose.
- Find the area between your nasal bone and the corner of the eyes.
- Hold a firm pressure in that spot with your fingers for about 15 seconds.
- Then, using your index fingers, stroke downward along the side of the bridge of your nose.
Where is the bulla located in the ethmoid?
Dr Craig Hacking ◉ ◈ and Dr Maxime St-Amant ◉ et al. The ethmoid bulla, also known as bulla ethmoidalis, is the largest and most consistent air cell of the anterior ethmoid air cells. It is located posterior to the frontal recess and enclosed laterally by the lamina papyracea.
Is there a fissure below the ethmoidal bulla?
The ethmoid bulla (or ethmoidal bulla) is an elevation or bulge on lateral wall of the middle meatus produced by – and just above the – middle ethmoidal cells, which are contained within this bulla, and open on or near to it. Just below the bulla is a curved fissure, the hiatus semilunaris. The maxillary sinus also opens below the bulla.
Where is the bulla located on the nose?
bulla ethmoidalis. A rounded, thin-walled, bony projection into the middle meatus of the nose underneath the middle turbinate bone, formed by an anterior ethmoid sinus.