BIOS1171 Lecture 22: Lecture 22 Blood Supply
22 Aug 2018
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Anterior cerebral arteries (aca): deep inside longitudinal fissure, travels along the corpus callosum in the longitudinal fissure (between hemispheres), sending branches supplying the medial surface of the frontal & parietal lobes. Important: lesion, paralysis, discommunication of frontal & parietal lobes language problems, blood loss to m1 & s1 cortex & lower body, loss of analysing events & emotional responses, lose behavioural control. Middle cerebral arteries (mca): travels through the sylvian fissure to the lateral surface of the cortex, then divides into frontal, parietal & temporal branches. Wernicke#area## inferior#parietal## lobe: lesion: the#primary#auditory#cortex, cannot produce language/sentences, cannot understand language (what yourself, or others, say) Vertebral-basilar system: the 2 vertebral arteries ascend into the neck (out of the aorta) by passing through the top. 6 cervical vertebrates enter cranium (with spc) through foramen magnum through dura mater into subrarachnoid space: as they enter the cranium 2 vertebrate arteries run along medulla fuse at base of pons.
