Psyc4130 1nd Edition Lecture 8 Outline of Last Lecture I First notes for new test Outline of Current Lecture II Anatomical Planes and Directions III Meninges IV Ventricle System V Development Current Lecture Important Terms and Concepts from Carlson Chapter 3 Anatomical Planes and Directions o Anterior Rostral front of brain o Posterior Caudal back o Dorsal ventral top top part of brain in line with spinal cord when on all fours Ventral belly part o Medial lateral side of brain o Mid sagittal midline of brain o Coronal slices of bread o Horizontal used on FMRI scans won t refer to as much Meninges Inflammation of protection of coting of brain and spinal cord o Dura leather like on outside o Arachnoid looks like spider web o Pia up against grey matter of cerebral cortex thin barely detectable right against brain tissue o Subarachnoid space Ventricular System o Lateral 3rd and 4th ventricleso CSF cerebrospinal fluid flowing in subarachnoid space and around spinal cord and in ventricles of the brain Allows dead cells to empty into body filtering systems Cushion between brain tissue and cranium buoyancy These notes represent a detailed interpretation of the professor s lecture GradeBuddy is best used as a supplement to your own notes not as a substitute o Choroid plexus type of cell which secretes the CSF highly vascularized tissue lines ventricles of brain like moss seaweed constantly being replenished and dumped back into portal circulation Development o Stress diathesis different people have different degrees of vulnerability to specific conditions i e genes affect how things get wired in the first place o Gastrula Ectoderm outerlayer Neurulation basic building blocks of nervous system springs forth from the ectoderm begins 17 days after conception formation of neural tube Gastrulation o Neural tube spina bifida cyst on baby s back associated with neurulation folic acid b12 vitamin o Neurogenesis o Glial spokes radial glia radiate out from middle serve migration process o Inside out development of cerebral cortexo FAS fetal alcohol syndrome causes problems with migrating neurons o Telencephalon farthest out extent of the brain Cortex and Subcortical Structures cortex falls into itself and creates the ribs Gyri sulci indented areas valleys fissures deep sulci Neocortex out most part overall motor behavior o Frontal Lobe decision making PFC biggest part of frontal lobe complex planning helps deal with obstacles and revise the goal helps keep you motivated serotonin helps to inhibit impulsive behavios o Two other areas 1 precentral gyrus primary motor cortex proximal control of volitional behavior in time right before it happens willful voluntary behavior 2 Premotor cortex big picture what your trying to accomplish i e learn to play piano neurons take care of things automatically don t have to think about it Rest of brain is sensation and perception Postcentral gyrus somatosensory cortex
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