38 The parasympathetic division of the autonomic nervous sys

38 The parasympathetic division of the autonomic nervous system A) has long postganglionic neurons. B) has a single neuron arising from the spinal cord. c) has relatively short preganglionic neurons D) only utilizes acetylcholine as a neurotransmitter. E) none of the above

Solution

1. The correct answer is option D.

Parasympathetic nervous system is a division of Autonomous nervous system. It is sometimes also called the rest and digest system, it conserves energy as it slows down the heart rate, increases gland activity and relaxes sphincter muscles in the GI tract. Post ganglionic fibres in the parasympathetic nervous system are cholinergic and uses acetylcholine as the neurotransmitter.