Anatomy and Cell Biology 3319 Lecture Notes - Lecture 4: White Matter, Grey Matter, Homunculus
24 Jan 2019
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4:18 pm all cognition takes place in the cerebral hemispheres white matter - axons corpus collosum very large region of axons that join the hemispheres. 83% of total brain mass sensory and motor areas association areas: perception and interpretation cognitive function. Gyri and sulci of the cerebral cortex gyri = ridges sulci = grooves fissure = very deep sulcus provide anatomical separation of areas the anatomy may be different from the exact gyrus or sulcus where it is located. Summary lateral sylvian fissure lateral ventricles deep grey matter lateral ventricles still because they are in a c shape coronoal section motor temporal lobe. Motor areas of the cortex sends the command out pathway between broca"s area and wernicke"s area. Cerebral cortex maps (homonculus) of the body on both motor and sensory cortex -- somatotopy descending pathway crosses the midline primary motor cortex controls contralateral side of the body.
