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The temporal styloid process is a slender bony process of the temporal bone extending downward and forward from the undersurface of the temporal bone [1] just below the ear. [citation needed] The styloid process gives attachments to several muscles, and ligaments.
A glomus jugulare tumor is a tumor of the part of the temporal bone in the skull that involves the middle and inner ear structures. This tumor can affect the ear, upper neck, base of the skull, and the surrounding blood vessels and nerves. A glomus jugulare tumor grows in the temporal bone of the skull, in an area called the jugular foramen.
Examples of the onset and recovery of the acoustic reflex measured with a laser Doppler velocimetry system. Thus, the reflex most likely developed to protect early humans from loud thunder claps which do not happen in a split second. [7] [8] The reflex works by contracting the muscles of the middle ear, the tensor tympani and the stapedial muscle.
The iter chordæ posterius (apertura tympanica canaliculi chordæ) is situated in the angle of junction between the mastoid and membranous wall of tympanic cavity immediately behind the tympanic membrane and on a level with the upper end of the manubrium of the malleus; it leads into a minute canal, which descends in front of the canal for the ...
Like the stapes bone to which it attaches, the stapedius muscle shares evolutionary history with other vertebrate structures.. The mammalian stapedius evolved from a muscle called the depressor mandibulae in other tetrapods, the function of which was to open the jaws (this function was taken over by the digastric muscle in mammals).
The central portion of the tympanic part is thin, as it gives rise to the bony inner two-thirds of the ear canal, and in 5 - 20% of skulls the lower surface is perforated by a hole, the foramen of Huschke [1] that opens onto the temporomandibular joint due to incomplete fusion of the anterior and posterior prominences during development.
The foramen tympanicum, or also known as the foramen of Huschke, is an anatomical variation of the tympanic part of the temporal bone in humans resulting from a defect in normal ossification during the first five years of life. The structure was found in 4.6% [1] to as high as 23% of the population. [citation needed]
The cochlear and vestibular branches of cranial nerve VIII separate according to this schema and terminate in the inner ear. The facial nerve continues traveling through the facial canal, eventually exiting the skull at the stylomastoid foramen. A common mnemonic to remember the anterior quadrants of the inner ear is: "seven up, coke down ...