00:01
Divisions of the nervous system are the two aspects of the autonomic nervous system.
00:05
The parasympathetic division is the one that is active when your body is in a restful state, and it is best summarized by the phrase rest and digest, because this division enables your body to restore and maintain itself.
00:18
The sympathetic division is summarized by the phrase, fight or flight, because this is the division that becomes active when you encounter a dangerous or stressful situation, and it enables you to handle these situations.
00:30
Appropriately.
00:33
These two systems have a complementary effect on each other, where when one is active, the other is suppressed.
00:40
In the parasympathetic division, we see that the pupils are constricted, whereas in the sympathetic system, they are dilated.
00:48
Dilated pupils allow more light to enter the eye, enabling you to better perceive the stressful situation that you need to be responding to.
00:58
In the parasympathetic system, saliva production is stimulated, whereas in the sympathetic system saliva production is inhibited.
01:06
Saliva helps with the breakdown of food so that in the parasympathetic system, its stimulation helps to digest food in order to restore the body.
01:17
In the parasympathetic system, your heartbeat is slowed, whereas in the sympathetic it is increased...
