00:01 Now, let's just summarize in conclusion, the main differences between the sympathetic and the parasympathetic nervous systems. 00:08 Sympathetic comes from the thoracolumbar region T1 to L3. 00:13 Parasympathetic comes from the cranial nerves and the sacrum, So specifically, the vagus nerve, but also S2 to S4. 00:21 Preganglionic neurons for the sympathetic nervous system are relatively short. 00:25 The parasympathetic ones preganglionic neurons are relatively long. 00:30 There are obviously some exceptions, but that is the general pattern. 00:33 Postganglionic sympathetic neurons are long. 00:36 Postganglionic parasympathetic neurons are short. 00:40 The ganglia for the sympathetic are in the sympathetic chain. 00:44 Abdominal prevertebral ganglia and the adrenal medulla. 00:47 The parasympathetic ganglion are within the target organs very near to the target organs that they're going to integrate. 00:55 The function of the sympathetic nervous system is one of catabolic in nature. 01:00 It's fight or flight expenditure of the body's energy and resources. 01:05 Whereas, the function of the parasympathetic is one of anabolic in nature, maintaining conservation protecting the body's resources, through rest and digest. 01:15 There's a lot to cover in the autonomic nervous system. 01:18 So hopefully, you found this video helpful.
The lecture Sympathetic vs. Parasympathetic Nervous System: Conclusion by James Pickering, PhD is from the course Lymphatics and Nerves of Abdominopelvic Region.
Which statement is correct about the autonomic nervous system?
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