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The jugular fossa is located in the temporal bone, posterior to the carotid canal and the cochlear aqueduct. In the bony ridge dividing the carotid canal from the jugular fossa is the small inferior tympanic canaliculus for the passage of the tympanic branch of the glossopharyngeal nerve. [1]
The posterior surface forms the anterior part of the posterior cranial fossa of the base of the skull, and is continuous with the inner surface of the mastoid portion. Near the center is a large orifice, the internal acoustic opening , the size of which varies considerably; its margins are smooth and rounded, and it leads into the internal ...
The posterior cranial fossa is the part of the cranial cavity located between the foramen magnum, and tentorium cerebelli. It is formed by the sphenoid bones , temporal bones , and occipital bone .
A glomus jugulare tumor grows in the temporal bone of the skull, in an area called the jugular foramen. The jugular foramen is also where the jugular vein and several important nerves exit the skull. This area contains nerve fibers, called glomus bodies. Normally, these nerves respond to changes in body temperature or blood pressure.
It passes through the petrous part of the temporal bone within the tympanic canaliculus that is situated within the bony ridge separating the carotid canal and the jugular foramen to reach the middle ear. [2] In the tympanic cavity of the middle ear, it ramifies upon the promontory of tympanic cavity to form the tympanic plexus. [2] [1 ...
The posterior border, also serrated, articulates with the inferior border of the occipital between the lateral angle and jugular process. 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.
Pain in the external auditory canal can in rare cases be due to vagal neuralgia because of vascular compression of the vagus nerve (often by the posterior inferior cerebellar artery). The affected neurons are found in the superior ganglion and innervate the ear via the auricular branch of the vagus.
It is a rounded eminence of the anterior root of the posterior end of the outer surface of the squama temporalis. This tubercle forms the front boundary of the mandibular fossa, and in the fresh state is covered with cartilage. The mandibular condyle normally moves over the articular tubercle during physiologic maximal opening of the jaw. [1]