Question

parasympathetic nervous system develops from
(a)Thoracolumbar
(b)Craniosacral
(c) Cervical
(d) Lumbar

Answer 1

Hint: Parasympathetic nervous system differs from the sympathetic nervous system in origin. Nerve fibers of the parasympathetic nervous system arise from the central nervous system. Specific nerves include several cranial nerves, specifically the oculomotor nerve, facial nerve, glossopharyngeal nerve, and vagus nerve.

Complete answer:
The nervous system is mainly concerned with the perception of senses, elicitation, and transmission of impulses, and response to stimuli for adjustment of the body in relation to the conditions in the environment. The nervous system is classified into the central nervous system and peripheral nervous system. The peripheral nervous system is divided into an autonomic nervous system and a somatic nervous system. The Autonomic nervous system is in turn divided into sympathetic and parasympathetic nervous systems. The parasympathetic nervous system is described as originating in the craniosacral region, that is, from the brainstem and also the sacral plexus.

Additional Information: - The parasympathetic nervous system is one of three divisions of the autonomic nervous system.
-When the parasympathetic nervous system is activated, it produces a calm and relaxed feeling in the mind and body.
-People can learn to trigger their parasympathetic nervous system to immediately reduce their sense of anxiety and stress.
-The parasympathetic nervous system is an anatomically defined division of the autonomic nervous system, being that part whose motor components run in cranial nerves III, VII, IX, and X and in the sacral nerves.
So, the correct answer is ‘craniosacral.’

Note: The parasympathetic nervous system releases the hormone acetylcholine to slow the heart rate. Stimulating the vagus nerve stimulates the parasympathetic nervous system, which in turn reduces stress. The sympathetic nervous system is one of the autonomic nervous systems, whose outflows are from the thoracic and upper lumbar spinal cord. The functions of both sympathetic and parasympathetic nervous systems are diverse.