autonomic nervous system-1 (ans1)
TRANSCRIPT
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physiology
Si plified
BY….Dr.M7md El-Bshany
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• Neuron.• Reflex Action.• Central Nervous System.• peripheral Nervous System.
Objectives
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Neuron
Def.
structure
Structural unit of nervous system
Cell body (soma). Processes.
Axon DendritesDef Single longer process Multiple short
processes
Function Conduction of impulse Collect impulseTransmit to cell body↑Surface area
Direction Away from Towards
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Types
NeuronAfferent(sensory) Carrry impulse from Receptor to CNS.
Efferent(Motor) Carrry impulse from CNS to Effector.
Inter-neurons(Associative)
Represent 99% of neurons. Locatted entirely in CNS. Relay message between neurons. Act as associative or integrative funtions of CNS.
Axon Terinal
Neuron Neuro-neural junction
Muscle Neuro-muscular junction
Gland Nuero-epithelial junction
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Reflex ActionDef. Functional unit of nervous system.
Involuntry response of part of body to stimulus of sensory receptor.
Pathway
Types
Somatic flection withdrawl reflex. Autonomic Micturation &defecation rflexes.
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Central Nervous SystemCerebum
Mid-brain
Medulla oblongata
Pons
Cerebellum
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Peripheral Nervous System
Anatomical classification
physiological classification
Cranial nerves.(12 pairs)
Spinal nerves.(31 Pairs)
Somatic nerves. Autonomic nerves.
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Centre
So, whats difference ()somatic &autonomic NS?
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Efferent
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