In humans, visceral organs are innervated by

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In humans, visceral organs are innervated by

1. sympathetic nerves and are under conscious control
2. parasympathetic nerves and are under conscious control
3. both sympathetic and parasympathetic nerves and are under conscious control
4. both sympathetic and parasympathetic nerves but are not under conscious control

Correct Option: D

The activities of all visceral organs are coordinated through the regulation of their smooth muscles and glands by the nerve fibres of the sympathetic and parasympathetic nervous system. These constitute the autonomic nervous system which carry out functions that are not under the control of our will.