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  2. Posterior cerebral artery - Wikipedia

    en.wikipedia.org/wiki/Posterior_cerebral_artery

    The posterior cerebral artery (PCA) is one of a pair of cerebral arteries that supply oxygenated blood to the occipital lobe, as well as the medial and inferior aspects of the temporal lobe of the human brain. The two arteries originate from the distal end of the basilar artery, where it bifurcates into the left and right posterior cerebral ...

  3. Cerebral circulation - Wikipedia

    en.wikipedia.org/wiki/Cerebral_circulation

    The posterior cerebral circulation is the blood supply to the posterior portion of the brain, including the occipital lobes, cerebellum and brainstem. It is supplied by the following arteries: Vertebral arteries: These smaller arteries branch from the subclavian arteries which primarily supply the shoulders, lateral chest, and arms.

  4. Cerebral arteries - Wikipedia

    en.wikipedia.org/wiki/Cerebral_arteries

    Angiogram of the arterial supply. The cerebral arteries describe three main pairs of arteries and their branches, which perfuse the cerebrum of the brain. The three main arteries are the: Anterior cerebral artery (ACA), which supplies blood to the medial portion of the brain, including the superior parts of the frontal and anterior parietal ...

  5. Leptomeningeal collateral circulation - Wikipedia

    en.wikipedia.org/wiki/Leptomeningeal_collateral...

    Leptomeningeal collateral vessels from the anterior cerebral artery and posterior cerebral artery appeared to allow for perfusion of some brain tissue to persist, partially compensating for the loss of the major vessel. [6] This compensatory effect is however usually inadequate to maintain a normal blood supply. [11]

  6. Coronary circulation - Wikipedia

    en.wikipedia.org/wiki/Coronary_circulation

    On the posterior surface of the heart, the right coronary artery gives rise to the posterior interventricular artery, also known as the posterior descending artery. It runs along the posterior portion of the interventricular sulcus toward the apex of the heart, giving rise to branches that supply the interventricular septum and portions of both ...

  7. Circle of Willis - Wikipedia

    en.wikipedia.org/wiki/Circle_of_Willis

    The posterior communicating artery is given off as a branch of the internal carotid artery just before it divides into its terminal branches - the anterior and middle cerebral arteries. The anterior cerebral artery forms the anterolateral portion of the circle of Willis, while the middle cerebral artery does not contribute to the circle.

  8. Posterior communicating artery - Wikipedia

    en.wikipedia.org/wiki/Posterior_communicating_artery

    The brain is supplied with blood by the internal carotid arteries and also by the posterior cerebral arteries; the posterior communicating arteries connects the two systems. This provides redundancies or collaterals in the cerebral circulation so that, if one system is blocked or narrowed, the other can take over.

  9. Posterior perforated substance - Wikipedia

    en.wikipedia.org/wiki/Posterior_perforated_substance

    The posterior perforated substance (PPS) is a layer of gray matter which is pierced by small apertures for the transmission of blood vessels. Its inferior part lies on the ventral aspect of the medial portions of the tegmenta and contains the interpeduncular nucleus ; its superior part forms part of the floor of the third ventricle .