Latin lobulus paracentralis Dorlands/Elsevier l_13/12500890 FMA 77534 | NeuroNames ancil-404 TA A14.1.09.209 | |
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Paracentral lobule is on the medial surface of the hemisphere and is the continuation of the precentral and postcentral gyri. The paracentral lobule controls motor and sensory innervations of the contralateral lower extremity. It is also responsible for control of defecation and urination.
Contents
It includes portions of the frontal and parietal lobes:
While the boundary between the lobes, the central sulcus, is easy to locate on the lateral surface of the cerebral hemispheres, this boundary is often discerned in a cytoarchetectonic manner in cases where the central sulcus is not visible on the medial surface.
Function
Neurons in paracentral lobule are concerned with:
- Motor and sensory innervations of the contralateral lower extremity
- Regulation of physiological function such as defecation and micturition
Blood supply
It is supplied by branches of the anterior cerebral artery.
Applied anatomy
Damage of paracentral lobule occurs from occlusion of anterior cerebral artery. Characteristic manifestations include: