Question
Tabulate the differences between sympathetic and parasympathetic neural system?
| Sympathetic Neural system (SNS) | Parasympathetic Neural system (PNS) | |
| 1 | SNS originates in the thoracic and lumbar region of the spinal cord. | PNS originates in the cranial region of the brain and the sacral region of the spinal cord. |
| 2 | Sympathetic ganglia are linked up to form a chain. | Its ganglia remain isolated. |
| 3 | Preganglionic fibres are short and the postganglionic fibres are long. | Preganglionic fibres are long and the postganglionic fibres are short. |
| 4 | Noradrenaline is produced at the terminal ends of the postganglionic fibres at the effector organs. Hence the system is adrenergic. | Acetylcholine is produced at the terminal ends of the postganglionic fibres at the effector organs. Hence the system is cholinergic. |
| 5 | Active during stressful conditions preparing the body to face them. | Active during relaxing times restoring normal activity after a stress. |
| 6 | The overall effect is excitatory and stimulating. | The overall effect is inhibitory. |
| 7 | It is considered as the flight or fight system. | It is considered as 'The Rest and Digest System' or 'The Feed and Breed System'. |
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