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1- Neuroanatomy - Neuroanatomy To and From the Brain To the...

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NeuroanatomyTo and From the BrainTo the Brain:Afferent– carries information from sensory receptors in skin to the brainFrom the Brain:Efferent– carries information from the brain to the neurons controlling legmuscles, causing a responseSummaryDorsal: superior, top or aboveVentral: inferior, bottom or belowAnterior: rostral, frontPosterior: caudal, backMedial: middleLateral: sideAfferent: information to the brainEfferent: information from the brainBrain’s Surface FeaturesSlices:Axial/Horizontal= on x-axis; view or the cut falls along the horizon; usually viewed lookingdown on the brain or from aboveSagital= y-axis; lengths from front to back, viewed from the side; a medial viewCoronal/Frontal= frontal cortex; cut in the vertical plane, from the crown of the head downMeninges: 3 Layers1.Dura: (hard) Tough double layer of Fibrous tissue enclosing the brain in loose sack2.Arachnoid:(thin sheet of delicate connective tissue that follows the brain’s contours-Subarachnoid space – space between pia and arachnoid layers; bring nutrients3.Pia Matter: (soft) moderately tough membrane of connective tissue fibers that cling tothe surface of the brainCerebrospinal Fluid (CSF):serves as a cushion so that the brain can move or expandslightly without pressing on the skullGyri: Outer part of the folds = bumpsSulci: Inner part of the folds = groovesMajor Cortical DivisionCentral Sulcus: division of parietal and frontal lobe-In front there is the pre central gyrus – primary motor cortex-Behind there is the postcentral gyrus – primary somatosensoryLateral Sulcus(Fissure): separates the frontal lobe from the temporal lobe
Frontal Lobe:executive functioning, thinking language, memoriesParietal Lobe:processes sensory informationOccipital Lobe:processing visionTemporal Lobe:hearing, language, musicBrain IrrigationThree Major Arteries: Blockage in different arteries can result in different functional

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Gray matter, Middle cerebral artery

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