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24 Cards in this Set
- Front
- Back
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Cerebral cortex functional areas
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Motor, sensory and association areas
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Motor areas of the cerebral cortex control what
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voluntary motor functions
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Sensory areas of the cerebral cortex controls what
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areas that provide for conscious awareness of sensation
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areas that act mainly to integrate diverse information for purposeful action
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association area of the cerebral cortex
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the location for the primary somatosensory area
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postcentral gyrus of the parietal lobe of the cerebral cortex
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Somatic sensory pathways relay information from somatic sensory receptors to
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primary somatosensory area in the cerebral cortex and the cerebellum
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The cerebral cortex compris how many sets of neurons
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3 first, second and third order neurons
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These neurons conduct impulses from somatic receptors into the brain stem or spinal cord
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first order neurons
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stimuli arising from the face mouth, teeth, and eyes propagate along cranial nerves into what?
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the brain stem
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Stimuli arising from the neck, body and posterior aspect of the head propagate along spinal nerve into where
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Spinal cord
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These neurons conduct impulses from the brain stem and spinal cord to the thalamus
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second order neurons
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Where do second order neurons go after decussation
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the axons ascend to the ventral posterior nucleus of the thalamus
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These neurons conduct impulses from the thalamus to the primary somatosensory area of the cortex
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third order neurons
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Where do second order neurons decussate
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either the brain or the spinal cord
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Where do third order neurons decissate
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prior to the thalamus and the primary somatosensory area of the cortex
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third order neurons receive information from which side of the body?
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The opposite side of the body
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Name the two types of somatic sensory pathways
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Consciously perceived and proprioceptive (generally not consciously perceived)
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What area of the brain deals with conscious perception
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cerebral cortex
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what part of the brain deals with non conscious proprioception
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Cerebellum
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somatic sensory impulses enter the spinal cord ascend to the cerebral cortex by tow pathways, name them
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the posterior column-medial lemniscus pathway and the anterolateral (spinothalamic) pathway
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somatic sensory impulses entering the cerebellum do so by two tracts
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posterior spinocerebellar tract and the anterior spinocerebellar tract
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Which pathways decussate
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pathways that are consciously perceived decussate; and second order neuron decussate
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Axons of the first order neurons form ascending tracts on where?
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fasciculi cuneatus and fasciculi gracilis
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Where do axons of second order neurons form ascending tracts
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in all other sensory pathways
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