Paracentral lobule

 Paracentral lobule 

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•       Paracentral lobule is situated   on the medial surface of the cerebral hemisphere

•      Paracentral lobule is the continuation of the precentral gyri of frontal lobe  and postcentral gyri of parietal lobe of cerebrum

•      Functions: The paracentral lobule controls motor and sensory innervations of the contralateral lower extremity.

•      It is also responsible for control of defecation and urination.

•      Artery supply : It is supplied by branches of the anterior cerebral artery branch of internal carotid artery

•      Damage of paracentral lobule occurs from occlusion of anterior cerebral artery. Characteristic manifestations include:

•      Contralateral lower limb muscle weakness

•      Urinary incontinence