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

3. Differences between This system is involuntary and
Autonomic nervous system Somatic nervous system
1.Auto:Self;nomos:governing; It is under voluntary control.
This system is involuntary and
maintains homeostasis
2.Each autonomic fibre is made up of 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 , It innervates the skeletal muscle
smooth muscles and exocrine glands
4.ANS controls visceral functions such It controls the skeletal muscle as circulation, digestion, excretion etc tone

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

8. 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

10. THANK YOU