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A disrupted blood supply to posterior inferior cerebellar artery due to a thrombus or embolus can result in a stroke and lead to lateral medullary syndrome. Severe occlusion of this artery or to vertebral arteries could lead to Horner's Syndrome as well.
The medulla oblongata or simply medulla is a long stem-like structure which makes up the lower part of the brainstem. [1] It is anterior and partially inferior to the cerebellum . It is a cone-shaped neuronal mass responsible for autonomic (involuntary) functions, ranging from vomiting to sneezing . [ 2 ]
The medulla oblongata, often just referred to as the medulla, is the lower half of the brainstem continuous with the spinal cord. Its upper part is continuous with the pons. [11]: 1121 The medulla contains the cardiac, dorsal and ventral respiratory groups, and vasomotor centres, dealing with heart rate, breathing and blood pressure.
It arises from the basilar artery on each side at the level of the junction between the medulla oblongata and the pons in the brainstem. It has a variable course, passing backward to be distributed to the anterior part of the undersurface of the cerebellum, anastomosing with both the posterior inferior cerebellar (PICA) branch of the vertebral ...
The vasomotor center (VMC) is a portion of the medulla oblongata.Together with the cardiovascular center and respiratory center, it regulates blood pressure. [1] It also has a more minor role in other homeostatic processes.
The cardiovascular centre, or cardiovascular center, is part of the medulla oblongata of the brainstem. [1] [2] Normally, the heart beats without nervous control. In some situations, such as exercise, and major trauma, the cardiovascular centre is responsible for altering heart rate. It also mediates respiratory sinus arrhythmia.
The area postrema is located in the caudal medulla oblongata near the junction of the brainstem and the spinal cord. [16] In humans and in most other mammals that have been studied, it consists of swellings on either wall of the fourth ventricle. [16] [17] In rodents and lagomorphs, however, the area postrema forms a midline structure dorsal to ...
It lies between the cerebellum and the medulla oblongata. It receives CSF from the fourth ventricle via the median aperture (foramen of Magendie). The cisterna magna contains: The vertebral artery and the origin of the posterior inferior cerebellar artery (PICA) The ninth (IX), tenth (X), eleventh (XI) and twelfth (XII) cranial nerves; Pontine ...