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posterior communicating artery

an artery that arises from the internal carotid artery and passes just ventral to the optic tract to merge with the posterior cerebral artery, thus completing the circle of Willis at the base of the brain. Branches of the posterior communicating artery supply the optic tract and part of the optic chiasm, the genu of the corpus callosum, the posterior hypothalamus, parts of the internal capsule, the third ventricle, and anterior and ventral nuclei of the thalamus.

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Psychology term of the day

October 18th 2024

social representation

social representation

a system, model, or code for unambiguously naming and organizing values, ideas, and conduct, which enables communication and social exchange (i.e., at the levels of language and behavior) among members of a particular group or community. [term coined and theory elaborated by Romanian-born French psychologist Serge Moscovici (1925–  )]