Question

The sympathetic nervous system (S.N.S) work through secretion of

• A. Noradrenaline, which stimulates the organ
• B. Adrenaline, which inhibits the organ
• C. Both A and B
• D. Acetyl choline, which stimulates the organ

Answer 1

Answer: (C)

The sympathetic nervous system works for neuronal and hormonal stress response. These type of response is also called as fight-or- flight type of response or sympatho-adrenal type of response. This response occurs at the pre-ganglionic sympathetic fibres. These fibres end in the adrenal gland. These fibres secrete acetylcholine which thereby, starts the activation and secretion of adrenaline and noradrenaline. Acetylcholine stimulates the muscles. Adrenaline and noradrenaline stimulate the organs such as heart and kidney.

So, the correct answer is option D.