AnnouncementsPegasus server accessBooks on reserveThebrainmcgill websiteJan 17, 19 and 24, 20-30 minutes of class end, brain models will be available as needed for students to study

Organization of the Nervous SystemOverview of the Central (CNS), Peripheral (PNS), Autonomic (ANS),Enteric (ENS)Nervous Systems

Atlas Online connection.lww.com/products/bear/samplematerial.aspRead chapters 1 and 2Read the illustrated atlasUse chapters 3 and 4 as extra reading if needed for exam 2

Views of the BrainLink to the brain mcgill: From simple to complexNeurological levelintermediate level Planes link buttonBeginner level3D view of brain

ThebrainmcgillLink to the brain mcgill: From simple to complexNeurological levelbeginner level Each lobe link buttonThe physical brain link button

Brain General DivisionsSuperficial Structures Cerebrum, Cerebellum, Brain Stem (midbrain, pons, medulla)Cerebral Hemispheres,Right & LeftFour Lobes per HemisphereFrontal, Parietal, Occipital, TemporalDeep StructuresBasal Ganglia and Thalamus

VocabularyGyrus & SulcusGrey and White MatterNuclei and GangliaFissuresAnterior, Posterior, Rostral, Caudal, Dorsal Ventral, Sagittal, Horizontal, Frontal/Coronal

Gyrus (gyri) and Sulcus (sulci)

Gyrus=folds on surface of brain Sulcus= grooves on brains surfacePurpose:increases surface area of the cortex so you can accommodate more neuronsmost developed part of brainmost recently evolved part of the brain.

CerebrumPaired cerebral hemispheres both together referred to as cerebrum

Cerebral HemispheresRight controls left side muscle and sensoryRight involved in spatial reasoning/parallel processingLeft controls right side muscle and sensoryLeft involved in logical reasoning

In most humans, right controls language

Four Lobes in Each HemisphereExternal surface divided into 4 lobes

Frontal lobe process conscious control of movement and behavior & personalityParietal lobe processes sensory information from muscle and skin

Temporal lobe is involved in processing hearing, and language

Occipital lobe subserves visual systems

Regional SpecializationProcessing of information is segregated in specific areas of the brain and separated by function.

Microscopic Cortical Organizationcerebral cortex: outer layers have gray matter with soma, synapses dendrites

Inner area has white matter=Myelinated afferent and efferent axons

Nuclei

Collection of neuronal somas in the deeper brain structures