ANAT 2646 Thalamus and Epithalamus

ANAT 2646 Thalamus and Epithalamus - • Reticular N –...

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Thalamus The gateway to the cerebrum Types of Nuclei Relay (specific) Association Diffuse (non-specific)
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Relay VA motor VL motor VP (VPM/VPL) Somatic sensation
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Relay Metathalamus MGN hearing LGN vision
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Relay/Association AN limbic (memory) MD = DM limbic (olfaction, cognition, judgement, mood)
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Association LP integration of sensory information Pulvinar integration of sensory information
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Diffuse Intralaminar N. Ascending reticular activating system
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Unformatted text preview: • Reticular N. – regulates the thalamus Epithalamus • Pineal Body • habenula: relay from limbic forebrain to midbrain • stria medullaris thalami: fiber bundle from limbic forebrain to habenula Pineal Body • Melatonin – secreted at night into the blood stream – induces sleep – may clear free radicals • secretion is suppressed by sympathetic fibers • suprachiasmatic nucleus – light/dark cycle...
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