neuromotor 2

neuromotor 2 - Cerebrum:...

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Cerebrum: Outer layer - cerebral cortex (gray), gyri Inner layer - white Longitudinal fissure - falx cerebri, hemispheres (lobes) corpus callosum Three sets of fibers: Association - w/i same hemi Commissural - between corresponding gyri in each hemi Projection - Ascending and descending tracts
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Cerebral cortex: Motor areas: anterior portion of each hemisphere Primary (4) controls groups of skeletal myo on opposite side of body cortical representation depends on the complexity of activity controlled Broca's (44,45 - usually the left frontal lobe) control myo for speech Sensory areas: impulses arrive in posterior half of hemispheres; Primary somatosensory (1,2,3) most direct connection to peripheral sensory structures; touch,proprioception,pain,temperature highly sensitive regions have greater cortical representation locates precise regions stimulated Primary visual (17 - medial occipital lobe) axons of optic to lateral geniculate in thalamus to area 17; shape,color,movement damage = blindness in part or all visual field Primary auditory (41,42) superior temporal lobe interprets pitch and rhythm
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Sensory areas (con’t); Primary gustatory (43) in postcentral gyrus, superior to lateral cerebral sulcus
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This note was uploaded on 03/09/2009 for the course KIN 3517 taught by Professor Staff during the Spring '08 term at LSU.

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neuromotor 2 - Cerebrum:...

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