NS Intro

NS Intro - Nervous System General Topics Overview Histology...

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Unformatted text preview: Nervous System General Topics Overview Histology of Nervous Tissue Neuronal Anatomy Neuronal Physiology Synapses Neurotransmitters Overview Nervous System The master controlling and communicating system of the body Functions: Sensory input Figure 11.1 Nervous System Integration Motor output Figure 11.1 Central Nervous System Brain and Spinal Cord Integrative and Control Centers Peripheral Nervous System Cranial Nerves Spinal Nerves Two Divisions Sensory Motor Sensory Division of PNS Somatic and visceral sensory Sensory fibers Somatic Afferent Visceral Afferent Motor Division of the PNS Motor Nerve Fibers Two Divisions Somatic Autonomic Involuntary Two divisions Sympathetic Parasympathetic Histology Histology of Nervous Tissue Highly Cellular Made up of two principal cell types Neurglia Neurons http://www.meddean.luc.edu/lumen/MedEd/Histo/HistoImages/hl3-03.jpg Neuroglia Four in the CNS, two in the PNS CNS Astrocytes Microglia Ependymal Cells Oligodendrocytes PNS Satellite Cells Schwann Cells Astrocytes Most abundant and versatile of glial cells Astrocytes Figure 11.3a Microglia Ependymal Cells Oligodendrocytes Line up along the thicker neuron fibers in the CNS Wrap the neuronal fibers and produce myelin sheaths http://members.tripod.com/blustein/Oligodendrocytes/08-zoom.jpg Satellite Cells Schwann Cells Surround and form myelin sheaths around the larger nerve fibers in the PNS Neuronal Anatomy Neurons...
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This note was uploaded on 02/09/2012 for the course BIO 102 taught by Professor William during the Spring '11 term at Harvard.

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NS Intro - Nervous System General Topics Overview Histology...

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