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The pontine arteries are a number of small arteries which come off at right angles from either side of the basilar artery and supply the pons and adjacent parts of the brain. The pontine arteries include the paramedian arteries, the short circumferential, and the long circumferential arteries. [1] [a]
The basilar part of the pons makes up two thirds of the pons. [1] It has a ridged appearance with a shallow groove at the midline. This groove is the basilar sulcus and is covered by the basilar artery. [2] The basilar artery feeds into the circle of Willis providing blood supply to the brainstem and cerebellum. [3]
Occlusion of AICA is considered rare, but generally results in a lateral pontine syndrome, also known as AICA syndrome.The symptoms include sudden onset of vertigo, vomiting, nystagmus, dysarthria, falling to the side of the lesion (due to damage to vestibular nuclei), and a variety of same-side features including hemiataxia, loss of all types of sensation of the face (due to damage to the ...
Pons. (Medial pontine syndrome affects structures at the bottom of the diagram: the corticospinal tract, abducens nerve, and occasionally the facial nerve. Medial lemniscus is also affected, but not pictured.) Specialty: Neurology
The prepontine cistern, or pontine cistern is one of the subarachnoid cisterns situated ventral to the pons. [1] It contains the basilar artery . [ 2 ] : 478 Each lateral aperture opens into the pontine cistern just posterior to the cranial nerve VIII .
The main supply of blood to the brainstem is provided by the basilar arteries and the vertebral arteries. [14]: 740 It is important to note that there is a bit of variability in how these arteries connect and supply blood to the brain, such as where the arteries fuse or are reinforced. The variability that exists allows for syndromes to be ...
Due to the small size of the arteries in the area, the most common cause of a local lesion is an infarction due to lipohyalinosis and hypertension. Like other small arteries of the brain, these vessels are vulnerable to microemboli , especially those generated due to turbulence or low-flow states in those with artificial heart valves or ...
The basilar sulcus is vertical directed and lies in the midline of the pons on its anterior (front) surface. The basilar artery runs within the basilar sulcus. The basilar sulcus is bounded on either side by an eminence caused by the descent of the cerebrospinal fibers through the substance of the pons.