Anatomy and Cell Biology 3319 Chapter Notes -Executive Suite, Hemispherectomy, Pyramidal Tracts

• School: Western University
• Department: Anatomy and Cell Biology
• Course: Anatomy and Cell Biology 3319
• Professor: Kem Rogers

Document Summary

Lobes of cerebral cortex: sulci: many shallow grooves on the surface of cerebral hemispheres, gyri: twisted ridges of brain tissue between sulci, sheet arrangement, highly folded to increase surface area, deeper sulci divide into 5 major lobes, frontal. Extends posteriorly to central sulcus: separates it from the parietal lobe. Precentral gyrus: containing primary motor cortex lies anterior to the central sulcus. Functions: plan, initiate & enact motor movement - eye movement & speech production. Most anterior region performs high-functioning cognitive functions: thinking, planning & decision making, working memory & other executive functions: parietal. Extends posteriorly to the central sulcus to parieto- occipital sulcus. Post-central gyrus just posterior to central sulcus. Processes sensory stimuli allowing: conscious awareness of general somatic sensation, special awareness of objects, sound & body parts, understanding of speech, occipital. Separated from parietal lobe by parieto-occipital sulcus on medial surface of hemisphere. Lies in the middle cranial fossa deep to temporal bone.