<prompt> Thrombosis of the Superior branch of middle cerebral aery leads to:Motor aphasiaUrinary retentionBitemporal hemianopiaGrasp reflex  <response>: In the Syln fissure, the MCA in most patients divides into superior and inferior divisions M2 branches. Branches of the inferior division supply the inferior parietal and temporal coex, Branches from the superior division supply the frontal and superior parietal coex. Hence due to damage of the blood supply of the Brocas area the main feature shall be motor aphasia. ENTIRE MCA is occluded at its origin blocking both its penetrating and coical branches - clinical findings are 1 contralateral hemiplegia, 2 hemianesthesia, 3Homonymous hemianopia, 4 A day or two of gaze preference to the ipsilateral side. 5Dysahria is common because of facial weakness. Dominant hemisphere is involved- global aphasia is present Nondominant hemisphere is affected- anosognosia, constructional apraxia, and neglect are found. PAIAL SYNDROME ABrachial syndrome- embolic occlusion of a single branch include hand, or arm and hand, weakness alone . BFrontal opercular syndrome-. facial weakness with nonfluent Broca aphasia, with or without arm weakness CProximal superior division of MCA. A combination of 1sensory disturbance, 2 motor weakness, and 3 nonfluent aphasia suggests that an embolus has occluded the proximal superior division and infarcted large poions of the frontal and parietal coices Dinferior devision OF MCA IN DOMINANT HEMISPHERE- -If a fluent Wernickes aphasia occurs without weakness, the inferior division of the MCA supplying the posterior pa temporal coex of the dominant hemisphere is probably involved. other menifestations -Jargon speech and an inability to comprehend written and spoken language are prominent -Contralateral, homonymous superior quadrantanopia. IN NON DOMINANAT HEMISHERE-Hemineglect or spatial agnosia without weakness indicates that the inferior division of the MCA in the nondominant hemisphere is involved. EOcclusion of a lenticulostriate vessel produces small-vessel lacunar stroke within the internal capsule . This produces pure motor stroke or sensory-motor stroke contralateral to the lesion. FIschemia within the genu of the internal capsule- 1 primarily facial weakness followed by arm and then leg weakness as the ischemiamoves posterior within the capsule., 2 Clumsy hand, dysahria lacunar syndrome. The contralateral hand may become ataxic, and dysahria will be prominent G Lacunar infarction affecting theglobus pallidus and putamen -parkinsonism and hemiballismus. 