Question

Which of the following hormones are neurotransmitters?

• A. Acetylcholine and secretin
• B. Choleystokinin and acetylcholine
• C. Adrenalin and acetylcholine
• D. Choleystokinin and adrenalin

Answer 1

Answer: (C)

Adrenalin and acetylcholine

Neurotransmitters are the chemicals that transmit the nerve impulse across the synapse. Acetylcholine is the neurotransmitter secreted by both pre- and post-ganglionic parasympathetic cholinergic neurons while adrenaline is released by sympathetic postganglionic neurons (the adrenergic neurons). Secretin and cholecystokinin are hormones secreted by endocrine cells of the duodenal wall. Thus, the correct answer is option C.