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Nervous Systems Overview Central Nervous System (CNS) brain spinal cord Peripheral Nervous System (PNS) Somatic (sensory & motor) Autonomic (afferent &

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Presentation on theme: "Nervous Systems Overview Central Nervous System (CNS) brain spinal cord Peripheral Nervous System (PNS) Somatic (sensory & motor) Autonomic (afferent &"— Presentation transcript:

1 Nervous Systems Overview Central Nervous System (CNS) brain spinal cord Peripheral Nervous System (PNS) Somatic (sensory & motor) Autonomic (afferent & efferent) a) sympathetic b) parasympathetic Enteric NS

2 The Nervous Systems + Sensory nerves + + Afferent nerves to CNS

3 Neurons and Synapses 1.Concentration 2.Electrical 3.Na+, K+ pump

4 Neural Transmission at the Synapse Retrograde messenger Autoreceptors Receptor or Axon Hillock Ca2 + Fusion pore

5 Mid -sagittal Section of the Brain Pituitary Gland (neo~, paleo~, archi~) DA, NE, 5HT RF -autonomic

6 Brainstem Medulla: autonomic nuclei Pons: sleep (REM), wakefulness nuclei Midbrain (mesencephalon): dopamine (DA), norepinephrine (NE), serotonin (5-HT) nuclei Cerebellum: sensory-motor integration, classical conditioning memory Reticular Formation: sleep and waking

7 Diencephalon Thalamus: sensory-motor association intrinsic Hypothalamus: emotions (autonomic) hunger, thirst, sex, sleep reward, punishment Pituitary Gland

8 Telencephalon Limbic System: amygdala, septum (subcortical), hippocampus (archicortical), cingulate gyrus (paleocortical); Kluver-Bucy syndrome, Papez- MacLean theory, Milner, Heath Basal Ganglia: nucleus accumbens (Olds: intra- cranial self-stimulation), striatum (Parkinson’s) Neocortex: frontal, parietal, temporal, occipital lobes

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