HTHSCI 1H06 Lecture Notes - Lecture 9: Parieto-Occipital Sulcus, Central Nervous System, Lentiform Nucleus
16 Apr 2019
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Document Summary
Cerebral cortex: is a region of gray matter that forms the outer rim of the cerebrum, contains billions of neurons arranged in layers. Longitudinal fissure: separates the cerebrum into right and left halves called cerebral hemispheres: within the longitudinal fissure between the cerebral hemispheres is the falx cerebri. Corpus callosum: a broad band of white matter containing axons that extend between the hemispheres. Insula, the fifth part of the cerebrum lies within the lateral cerebral sulcus, deep to the parietal, frontal and temporal lobes. Internal capsule, a thick band of white matter that contains both ascending and descending axons. Claustrum: thin sheet of gray matter situated lateral to the putamen, considered a subdivision of basal nuclei. Roles of the basal nuclei: plays a major role in the initiation and termination of movements. The caudate nucleus and the putamen receive input from sensory, association, and motor areas of the cerebral cortex and from substantia nigra.
