In humans, visceral organs are innervated by

Options

A. sympathetic nerves and are under conscious control
B. parasympathetic nerves and are under conscious control
C. Both (a) and (b)
D. both sympathetic and parasympathetic nerves but are not unter conscious control

Answer

D

Explanation

Both sympathetic and parasympathetic nerve fibres innervate visceral organs and coordinate their activity antagonistically, but this is not under body's conscious control.