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In neuroanatomy, the paracentral lobule is on the medial surface of the cerebral hemisphere and is the continuation of the precentral and postcentral gyri.The paracentral lobule controls motor and sensory innervations of the contralateral lower extremity.
In neuroanatomy, the postcentral gyrus is a prominent gyrus in the lateral parietal lobe of the human brain.It is the location of the primary somatosensory cortex, the main sensory receptive area for the sense of touch.
Animation. Primary motor cortex (Brodmann area 4) of the left cerebral hemisphere shown in red.The primary motor cortex (Brodmann area 4) is a brain region that in humans is located in the dorsal portion of the frontal lobe.
Medially, it is contiguous with the paracentral lobule. The internal pyramidal layer (layer V) of the precentral cortex contains giant (70-100 micrometers) pyramidal neurons called Betz cells, which send long axons to the contralateral motor nuclei of the cranial nerves and to the lower motor neurons in the ventral horn of the spinal cord.
The cingulate sulcus is a sulcus (brain fold) on the cingulate cortex in the medial wall of the cerebral cortex.The frontal and parietal lobes are separated from the cingulate gyrus by the cingulate sulcus.
In neuroanatomy, the parieto-occipital sulcus (also called the parieto-occipital fissure) is a deep sulcus in the cerebral cortex that marks the boundary between the cuneus and precuneus, and also between the parietal and occipital lobes.
The paracentral sulcus is a sulcus of the brain. It forms the paracentral lobule's anterior border. [1] It is part of the cingulate sulcus. Gallery
[3] [4] [5] Brodmann area 7 is part of the superior parietal lobule, [3] [6] but some sources include Brodmann area 5. [6] The inferior parietal lobule is further subdivided into the supramarginal gyrus, the temporoparietal junction, and the angular gyrus. [3] [4] [5] The inferior parietal lobule corresponds to Brodmann areas 39 and 40. [3] [5]