What is the middle meatus of the nose?
The middle meatus is an air passage of the lateral nasal cavity located between the middle nasal concha and lateral nasal wall. The anterior ethmoid air cells, maxillary and frontal sinuses all drain into the middle meatus.
What does the middle concha do?
The middle conchae are smaller. In humans, they are usually as long as the little finger. They project downwards over the openings of the maxillary and anterior and middle ethmoid sinuses, and act as buffers to protect the sinuses from coming in direct contact with pressurized nasal airflow.
Where is the middle concha?
The root of the middle nasal concha attaches to the lateral nasal wall near the junction of the orbit and the maxillary sinus.
What does middle meatus drain into?
The meatuses are three spaces located beneath each turbinate. The superior meatus drains for the sphenoid and posterior ethmoid sinuses. The middle meatus drains the frontal, anterior ethmoid, and maxillary sinuses. The inferior meatus contains the orifice of the nasolacrimal duct.
What is the difference between Concha and meatus?
The conchae divide the nasal cavity into nasal ducts or meatuses, which branch out from a common nasal meatus which is adjacent to the nasal septum.
What bone is the middle concha?
the ethmoid bone
The superior and middle nasal conchae are processes of the ethmoid bone, while the inferior nasal concha is formed by a separate cranial bone (of the same name).
What is the Concha?
The conchae are structures made of bone inside of your nose. They help control the airflow into your nose. They also clean and warm air that you’ve inhaled so that it’s ready to go to your lungs for respiration.
What is the function of the conchae in the nasal cavity?
nasal concha, also called Turbinate, or Turbinal, any of several thin, scroll-shaped bony elements forming the upper chambers of the nasal cavities. They increase the surface area of these cavities, thus providing for rapid warming and humidification of air as it passes to the lungs.
What bone is the middle nasal concha part of?
The middle nasal conchae or turbinates are one of the pairs of conchae in the nose, but unlike the inferior nasal conchae, these are not separate bones but part of the ethmoid bone.
What is middle turbinate concha bullosa?
A concha bullosa (CB) represents the presence of air cell in the turbinates, and the middle turbinate (MT) concha bullosa is a common nasal cavity anatomical variation. Pneumatization of the MT happens due to variation in the ethmoidal air cell system development.
What is the concha?
Is middle nasal concha a facial bone?
It extends horizontally along the lateral wall of the nasal cavity and consists of a lamina of spongy bone, curled upon itself like a scroll, (turbinate meaning inverted cone). The inferior nasal conchae are considered a pair of facial bones.
What is the concha part of the ear?
Concha: The fossa bounded by the tragus, incisura, antitragus, antihelix, inferior crus of the antihelix, and root of the helix, into which opens the external auditory canal. It is usually bisected by the crus helix into the cymba superiorly and cavum inferiorly.
Where are the inferior and middle nasal concha located?
nasal cavity
The inferior nasal conchae are a pair of bones, with one concha on either side, that separates the middle and lower nasal meatus, or nasal cavity. They are often described as being “spongy” bones.
How do you fix concha bullosa?
The definitive treatment of concha bullosa is surgical. Although asymptomatic concha bullosa does not require treatment, concha bullosa cases that cause obstruction of the ostiomeatal complex and disease in the paranasal sinuses and those that cause only airway obstruction are treated by performing ESS.
What is the shape of the middle meatus?
It is rough, and marked above by numerous grooves, directed nearly vertically downward from the cribriform plate; they lodge branches of the olfactory nerves, which are distributed to the mucous membrane covering the superior nasal concha. The air passage between the middle nasal concha and the lateral nasal wall is known as the m iddle meatus.
What is the middle nasal concha?
As the name suggests, the middle nasal concha or middle nasal turbinate is the bone located between the superior and inferior conchae [1]. Being about the size of the little finger, it has a rough and groovy surface, forming the inferior border of the medial plate of the lateral mass (labyrinth) of ethmoid [2].
What is the meaning of meatus?
Log In. : a curved anteroposterior passage in each nasal cavity that is situated below the middle nasal concha and extends along the entire superior border of the inferior nasal concha — compare inferior meatus, superior meatus.
What is the nasal meatus?
Nasal meatuses are the anteroposterior passages located on the lateral wall of the human nasal cavity. There are three meatuses varying in size, namely the superior, middle and the inferior meatus [2]. The superior meatus, located between the superior concha and the middle concha, is the smallest among the three meatuses.