medial occipital artery(redirected from P4 segment of posterior cerebral artery)
me·di·al oc·cip·i·tal ar·ter·y[TA]
one of the terminal branches of the posterior cerebral artery; it is distributed to the corpus callosum, medial aspects of the caudal aspect of the parietal lobe, and medial occipital lobe including the visual cortex by named branches that include the dorsal branch to the corpus callosum, parietal branch, parietooccipital branch, occipitotemporal branch, and calcarine branch; can be called the P4 segment of the posterior cerebral artery.
me·di·al oc·cip·i·tal ar·te·ry(mēd'dē-ăl ok-sip'i-tăl ahr'tĕr-ē) [TA]
One of the terminal branches of the posterior cerebral artery; it is distributed, by several named branches, to the posterior corpus callosum and the medial and superolateral portions of the occipital lobe including the visual cortex.