What is the posterior fossa of the brain?
The posterior fossa is a small space in the skull, found near the brainstem and cerebellum. The cerebellum is the part of the brain responsible for balance and coordinated movements. The brainstem is responsible for controlling vital body functions, such as breathing.
What does the posterior fossa contain?
The posterior cranial fossa is part of the cranial cavity, located between the foramen magnum and tentorium cerebelli. It contains the brainstem and cerebellum. This is the most inferior of the fossae. It houses the cerebellum, medulla and pons.
What part of the brain is located in the posterior cranial fossa?
cerebellum
The cerebellum is located in the posterior cranial fossa, which occupies approximately one eighth of the intracranial space. The posterior fossa extends from the tentorial incisura to the foramen magnum and is formed by the occipital, temporal, parietal, and sphenoid bones.
What drains directly from posterior cranial fossa?
Two veins from the right posterior temporal lobe empty into the transverse sinus. Some veins from the lateral part of the tentorial surface may empty into the superior petrosal sinus. D, Lateral cerebral and cerebellar surfaces. The sinuses in the tentorium receive drainage from both the cerebrum and cerebellum.
What is a posterior fossa stroke?
Posterior circulation infarction (POCI), also referred as posterior circulation stroke, corresponds to any infarction occurring within the vertebrobasilar vascular territory, which includes the brainstem, cerebellum, midbrain, thalami, and areas of temporal and occipital lobes.
What is the most common posterior fossa tumor?
hemangioblastoma: most common posterior fossa primary brain tumor in adults. astrocytomas, medulloblastomas, and ependymomas 6 are encountered in the posterior fossa of younger adults but are rare in older adults, accounting for <1% all tumors. lymphoma 4. lipoma 4.
What arteries supply structures of the posterior fossa?
The most commonly visualized branches of the distal vertebral artery are the PICA, the anterior spinal artery, the falx cere- belli artery, and the posterior meningeal artery.
Which cranial nerve is posterior?
the vagus nerve
dorsal nucleus of the vagus nerve: Also called the posterior motor nucleus of vagus, this is a cranial nerve nucleus for the vagus nerve in the medulla that lies under the floor of the fourth ventricle.
How common is posterior fossa syndrome?
About 25% of children who have surgery to remove medulloblastoma, a posterior fossa tumor, will develop posterior fossa syndrome. Less commonly, surgery for other tumors, such as astrocytoma and ependymoma, may also cause posterior fossa syndrome. Posterior fossa syndrome is not completely understood.
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