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  4. Post ganglionic nerve fibres of sympathetic system are :

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Q. Post ganglionic nerve fibres of sympathetic system are :

Haryana PMTHaryana PMT 2006

Solution:

The post-ganglionic nerve fibres of sympathetic. nervous system are adrenergic i.e., they release the neurotransmitter. nor-adrenaline at their termination. The sympathatic nerves stimulate the adrenal glands to secrete adrenaline. The post- ganglionic para-sympathatic fibers are cholinergic i.e., they release a chemical substance acetyl choline, a neurotransmitter, at their endings for the transmission of nerve empulses.