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Nervous Systems Overview

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

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Nervous Systems Overview

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  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 + Afferent nerves to CNS + Sensory nerves +

  3. Neurons and Synapses

  4. Neural Transmission at the Synapse Axon Hillock Retrograde messenger Autoreceptors Receptor or

  5. Mid -sagittal Section of the Brain Pituitary Gland

  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, Papez-MacLean • Basal Ganglia: nucleus accumbens (Olds: intra-cranial self-stimulation), striatum (Parkinson’s) • Neocortex: frontal, parietal, temporal, occipital lobes

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