Question: What Is Basilar Artery?

How does the basilar artery differ from most arteries?

The basilar artery carries oxygenated blood to the cerebellum, brainstem, and occipital lobes.

Cerebellar arteries supply the cerebellum and pontine arteries supply the pons, which relays information between different areas of the brain..

What area of the brain controls blood pressure?

The medulla oblongata controls breathing, blood pressure, heart rhythms and swallowing. Messages from the cortex to the spinal cord and nerves that branch from the spinal cord are sent through the pons and the brainstem.

Where is the basilar apex?

The basilar apex and the upper portion of the BA trunk are located in the interpeduncular and upper prepontine cisterns, deep at the center of the cranial base, a crucial area because of the density and deep central location of neurovascular structures.

What is a basilar artery aneurysm?

Basilar artery: Basilar tip aneurysms, shown in the image and the video below, are the most common in the posterior circulation, accounting for 5% of all aneurysms. Clinical findings usually are those associated with SAH, although bitemporal hemianopsia or an oculomotor palsy may occur.

How do you tear your basilar artery?

These findings indicate that when the man fell into the ditch, severe hyperextension occurred as a result of minor blunt forces to the face, and that the traumatic tear of the basilar artery was mechanically caused by overstretching due to hyperextension of the head.

What causes a tear in the basilar artery?

A stroke that occurs in the brainstem is either caused by a blood clot or hemorrhage. In some cases, a brainstem stroke may be the result of an injury to an artery as a result of sudden head or neck movement. Similar to risk factors for stroke, causes of a basilar artery stroke include the following: Smoking.

Which artery is the major source of blood to the midbrain?

The internal carotid arteries branch to form two major cerebral arteries, the anterior and middle cerebral arteries. The right and left vertebral arteries come together at the level of the pons on the ventral surface of the brainstem to form the midline basilar artery.

Can aneurysm go away by itself?

Eventually, the aneurysm withers away, and the blood vessel heals, resuming normal blood flow.

Where are 85% of aneurysms located?

Most intracranial aneurysms (approximately 85 percent) are located in the anterior circulation, predominantly on the circle of Willis.

Which two arteries fuse to form the basilar artery?

The internal carotid artery divides into the anterior and middle cerebral arteries. The paired vertebral arteries fuse at the caudal border of the pons to form the basilar artery.

Can you live a normal life with an aneurysm?

Can people live a long time with a brain aneurysm? Absolutely. Many aneurysms cause no symptoms at all. Some people live for years without knowing they have a brain aneurysm.

What is a basilar artery stroke?

Acute occlusion of the basilar artery may cause brainstem or thalamic ischemia or infarction. It is a true neuro-interventional emergency and, if not treated early, brainstem infarction results in rapid deterioration in the level of consciousness and ultimately death. It is one of the posterior circulation infarctions.

What supplies the basilar artery?

Basilar arterySourceVertebral arteriesBranchesPontine arteries, anterior inferior cerebellar (AICA) and superior cerebellar arteries, and terminal posterior cerebral arteries.SuppliesPons, and superior and inferior aspects of the cerebellum.Identifiers9 more rows

Where does the basilar artery come from?

The basilar artery is a midline structure formed from the confluence of the vertebral arteries. Terminally, the basilar artery branches to establish the right and left posterior cerebral arteries.