tympanic cavity การใช้

• The tegmen tympani, the roof of the tympanic cavity, is reduced.
• The branches of the tympanic cavity provide innervation to the mucosa of the middle ear.
• He realized the importance of the Eustachian tube and its role in adjusting air pressure in the tympanic cavity.
• It opens in front into that portion of the tympanic cavity which is known as the attic or epitympanic recess.
• Within the tympanic cavity the tympanic nerve forms a plexus on the surface of the promontory of the middle ear to provide general sensation.
• The squamosal lacks a suspensory process that contacts the tegmen tympani, the roof of the tympanic cavity, a defining character of oryzomyines.
• The squamosal bone lacks a suspensory process that contacts the tegmen tympani, the roof of the tympanic cavity, a defining character of oryzomyines.
• Like the mastoid cells it is filled with air and lined by a prolongation of the mucous membrane of the tympanic cavity, with which it communicates.
• The tegmen tympani, the roof of the tympanic cavity, is much reduced in " Voalavo " relative to " Eliurus ".
• Before exiting the jugular foramen, the tympanic nerve enters the petrous portion of the temporal bone and ascends via the inferior tympanic canaliculus to the tympanic cavity.
• Anteriorly the mastoid portion is fused with the descending process of the squama above; below it enters into the formation of the ear canal and the tympanic cavity.
• The petrotympanic fissure leads into the middle ear or tympanic cavity; it lodges the anterior process of the malleus, and transmits the tympanic branch of the internal maxillary artery.
• It is a reniform ( kidney-shaped ) opening leading from the tympanic cavity into the vestibule of the internal ear; its long diameter is horizontal and its convex border is upward.
• Stapedotomy, like stapedectomy, can be successful in the presence of sclerotic adhesions ( tissue growths abnormally linking the bones to the tympanic cavity ), provided the adhesions are removed during surgery.
• These parasympathetic, preganglionic secretomotor fibers originate from the glossopharyngeal nerve ( CN IX ) as one of its branches, the tympanic nerve, which enters the tympanic cavity through the inferior tympanic canaliculus.
• The anterior ligament of the malleus is a fibrous band that extends from the neck of the malleus just above its anterior process to the anterior wall of the tympanic cavity close to the petrotympanic fissure.
• The "'Superior ligament of the incus "'is a fibrous band that crosses from the body of the incus to the roof of the tympanic cavity just posterior to the superior ligament of the malleus.
• The antrum communicates behind and below with the mastoid air cells, which vary considerably in number, size, and form; the antrum and mastoid air cells are lined by mucous membrane, continuous with that lining the tympanic cavity.
• The visible central portion is concave ( curved inwards ) toward the tympanic cavity and convex ( curved outwards ) toward the cochlea; but towards the edges, where it is hidden in the round window niche, it curves the other way.
• Their " afferent " vessels drain the root of the nose, the eyelids, the frontotemporal region, the external acoustic meatus and the tympanic cavity, possibly also the posterior parts of the palate and the floor of the nasal cavity.