Anatomy of the Brain and Cranial Nerves (2).pptx - Anatomy...

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Anatomy of theBrain and CranialNerves1
The Nervous System can bedivided in:Central Nervous System (CNS)Brain and Spinal CordPeripheral Nervous System (PNS)Cranial and spinal nerves, ganglia, sensoryreceptors2
Division of the Peripheral NervousSystemSensoryorafferentSomaticVisceralMotororefferentSomatic - voluntaryVisceral or Autonomic Nervous System (ANS) -involuntarySympatheticParasympathetic3
Major regions andlandmarksSix regions in the adult brainCerebrumDiencephalonMesencephalonPonsMedulla oblongataCerebellumBrain contains extensive areas of neural cortexLayer of gray matter on the surface of the cerebellum andcerebrum4
The Cerebrum5
The cerebralhemispheresSurface containsgyri, sulci, fissuresFissuresLongitudinal fissureseparates two cerebralhemispheresTransverse fissureseparates cerebellum fromcerebrum6
The Cerebrum8
The cerebral hemispheresSulciParieto-occipital sulcusseparates parietal fromoccipital lobeLateral sulcusseparates temporal from parietal lobeCentral sulcusseparates frontal and parietal lobe9
The cerebral hemispheresGyriPrecentral gyrusPostcentral gyrus10
The cerebral lobesFrontalPrecentral gyrusPrimary motor area – conscious control ofvoluntary movements.Premotor cortex– memory bank for skilled motoractivities or of patterned and repetitious nature.Broca’s areaLocated on the left hemisphere. Controlsspeech.11
The cerebral lobesPrefrontal cortex – responsible for personality,cognition, intellect. Lesion cause mental andpersonality disorderParietalPrimary Somatosensory Area– touch, pressure,temperature, vibration, and pain from body wallSomatosensory association area– interpretsstimulus sent by the above area. Ex: recognizesobjects by touch.12
The cerebral lobesTemporalPrimary Auditory area– temporal lobe.Primary association auditory area– interprets the soundheard by above areaWernicke’s area– only on left hemisphere, betweenparietal and temporal lobes. Area responsible forunderstanding spoken languageOlfactory area–uncus. Smell area.

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Term
Summer
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Tags
Physiology, Anatomy, Medulla oblongata

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