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What may cause medulla oblongata to be wedged into foramen magnum?
Wiki User
∙ 11y ago
This is called a tonsillar hernation, where the cerebellum is pushed through the foramen magnum. The extra brain trying to pass through the foramen magnum can cause compression of the medulla, which has serious complications (e.g. stop breathing.)
This may be due to a space occupying lesion somewhere else in the brain, or in the cerebellum itself. As the brain cannot expand outwards (due to the hard skull) it expands down (and across where possible).
Examples of space occupying lesions include haemorrhage, oedema and tumours.
Wiki User
∙ 11y ago
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May cause medulla oblongata to be wedged into foramen magnum by pressur of blood?
cerebrovascular accident
What may cause the medulla oblongata to be wedged into the foramen magnum by pressure of blood?
That can be from anything that increases the pressure in the brain such as swelling, bleeding or masses and is called herniation. It can be from a birth defect known as a Chiari malformation.
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