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AUTONOMIC NERVOUS SYSTEM GENERAL CONSIDERATIONS MS.Nageswararao Dept. of Medical Pharmacology

AUTONOMIC NERVOUS SYSTEM GENERAL CONSIDERATIONS MS.Nageswararao Dept. of Medical Pharmacology. Differences between Autonomic nervous system Somatic nervous system 1.Auto:Self;nomos:governing; 1. It is under voluntary control.

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AUTONOMIC NERVOUS SYSTEM GENERAL CONSIDERATIONS MS.Nageswararao Dept. of Medical Pharmacology

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  1. AUTONOMIC NERVOUS SYSTEM GENERAL CONSIDERATIONS MS.Nageswararao Dept. of Medical Pharmacology

  2. Differences between Autonomic nervous systemSomatic nervous system 1.Auto:Self;nomos:governing; 1. It is under voluntary control. This system is involuntary and maintains homeostasis 2.Each autonomic fibre is made up of 2.Each somatic fibre is made up of two neurons arranged in series. single motor neuron, which connects the CNS to the skeletal muscle 3. ANS innervates the heart , 3.It innervates the skeletal muscle smooth muscles and exocrine glands 4.ANS controls visceral functions such 4.It controls the skeletal muscle as circulation, digestion, excretion etc. tone

  3. 5. Nerve fibres 5. Nerve fibres are pregang – myelinated myelinated postgang-non myelinated 6.Efferent transmitter is Ach 6. Acetylcholine and noradrenaline

  4. NEUROHUMORAL TRANSMISSION • Neurohumoral transmission implies that nerves transmit their message across synapses and neuroeffector junctions by the release of humoral (chemical) messengers • STEPS IN NEUROHUMORAL TRANSMISSION: • 1) Impulse conduction • 2) Transmitter release • 3) Transmitter action on post synaptic membrane • 4) Post junctional activity • 5) Termination of transmitters

  5. THANK YOU

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