What is the Autonomic Nervous System?

Autonomic Nervous System
We’re going to review the autonomic nervous system and the two systems called the sympathetic nervous system which is also referred to as fight or flight and the parasympathetic system. The two systems are very different from each other. Where we’re going to go over six points that contrast each other. Basically, when the sympathetic nervous system is activated your pupils are going to dilate, and opposite on the parasympathetic they’re going to constrict.

You’re going to have an elevated heart rate and an elevated respiratory rate, where in the parasympathetic your heart rate and your respiratory rate are going to lower. On the sympathetic nervous system, when it’s activated you will be sweating. In the parasympathetic your peristalsis will be activated. On the sympathetic, the epinephrine and the norepinephrine are two hormones that will be secreted. On the parasympathetic acetylcholine will be secreted.

Just with your blood pressure how everything’s been opposite, the same goes for the sympathetic you’ll have an increased blood pressure and the parasympathetic you’re going to have a decreased blood pressure. Lastly, the skin and abdominal arterioles will constrict for the sympathetic and they will dilate for the parasympathetic.



by Mometrix Test Preparation | Last Updated: January 14, 2021