Control and Co-ordination — BIOLOGY STD 12 Science — Question
Maharashtra BoardEnglish MediumSTD 12 ScienceBIOLOGYControl and Co-ordination4 Marks
Question
Parasympathetic nervous system.
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Answer
Parasympathetic nervous system consists of nerve fibres of some cranial nerves, sacral nerves and parasympathetic ganglia.
These parasympathetic ganglia are present on the sides of visceral organs like heart, lungs, stomach, kidney, etc.
Parasympathetic ganglia gives out parasympathetic fibres which innervates these involuntary organs.
Parasympathetic nervous system works through release of acetylcholine which acts as neurotransmitter. It is an inhibiting neurotransmitter which affects visceral organs.
This system works during rest and brings about relaxation, comfort, pleasure, etc.
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