Lecture 28 - Brain structures and functions I Four major...

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Brain structures and functions I
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Four major parts of the brain: 1) Cerebrum 2) Cerebellum 3) Diencephalon Thalamus Hypothalamus Epithalamus 4) Brain stem Pons Medulla oblongata Midbrain
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Cerebrum Functional areas of the cerebral cortex (gray matter): 1) Sensory areas 2) Motor areas 3) Association areas
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The Cerebrum Brodmann’s areas: Numbered Regions of Cortical tissue .
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Primary motor area Location: precentral gyrus in frontal lobe Function: voluntary activation of skeletal muscles Central Sulcus Precentral gyrus (Primary motor area)
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Premotor area (motor association area) Location : anterior to primary motor area in the frontal lobe Function : communicates with primary motor area and thalamus to coordinate complex learned movements Central Sulcus Premotor area
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Primary somatosensory area Location : post central gyrus in parietal lobe Function : receives sensory impulses from sensory receptors responding to touch, temperature and proprioception Central Sulcus Postcentral gyrus Primary somatosensory Area
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Sensory and motor inputs and outputs of the cerebral cortex are not equal for all parts of the body Entire body can be represented spatially on the primary motor and sensory areas of the cerebral cortex
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Lecture 28 - Brain structures and functions I Four major...

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