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Extension into the maxillary alveolar process may cause the roots of the molars and even premolars to lie just beneath the floor of the sinus or even project through the floor and into the sinus; in such cases, the roots of the teeth are typically surrounded by a thin layer of bone, but may sometimes lie directly underneath the mucous membrane ...
Recent studies have classified two types of maxillary sinus septa: primary and secondary. Primary septa are those initially described by Underwood and that form as a result of the floor of the sinus sinking along with the roots of erupting teeth; these primary septa are thus generally found in the sinus corresponding to the space between teeth, as explained by Underwood.
Coronary artery disease (CAD) or ischemic heart disease are the terms used to describe narrowing of the coronary arteries. [8] As the disease progresses, plaque buildup can partially block blood flow to the heart muscle. Without enough blood supply , the heart is unable to work properly, especially under increased stress.
It provides arterial supply the upper incisor and canine teeth as well as the mucous membrane of the maxillary sinus. [1] References See also. Anterior superior ...
It then turns [1]: 616 to pass inferomedially [1]: 653–654 and anteriorly [1]: 699 while passing through the anterior wall of the maxillary sinus [1]: 616 (the canal is marked by a groove upon the internal surface of the anterior wall of the sinus [1]: 699 ).
The middle superior alveolar artery is an inconstant [2] [3] artery supplying the upper jaw. It is one of the three superior alveolar arteries. [3] When present, it arises from the infraorbital artery [2] [3] and descends upon the lateral wall of the maxillary sinus, forming anastomotic arcades with the other two superior alveolar arteries of the same side before ending near the canine tooth. [3]
The heart is a muscular organ situated in the mediastinum.It consists of four chambers, four valves, two main arteries (the coronary arteries), and the conduction system. The left and right sides of the heart have different functions: the right side receives de-oxygenated blood through the superior and inferior venae cavae and pumps blood to the lungs through the pulmonary artery, and the left ...
Ethmoid sinus cavities which are located between the eyes. Frontal sinus cavities which can be found above the eyes (more in the forehead region). Maxillary sinus cavities are located on either side of the nostrils (cheekbone areas). Sphenoid sinuses that are located behind the eyes and lie in the deeper recesses of the skull.