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Dictionary » P » Parasympathetic

Parasympathetic

parasympathetic

Pertaining to a division of the autonomic nervous system.

See: autonomic nervous system. Originates in the brain stem and lower part of the spinal cord; opposes physiological effects of the sympathetic nervous system: stimulates digestive secretions; slows the heart; constricts the pupils; dilates blood vessels.


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Re: What are some ways to boost your immune system?

... kefir ( which is very easy actually ). And last, but not necessary the least, laughning, enjoying life, meditating - anything that activates your parasympathetic nervous system, because it is like the reverse state of fight-or-flight which, when active in prolonged episodes, can be very detrimental ...

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by caban
Tue Mar 13, 2012 9:06 am
 
Forum: General Discussion
Topic: What are some ways to boost your immune system?
Replies: 12
Views: 2647

Re: GI tract and enteric nervous system

... contains both efferent and afferent pathways. Just to screw students up, researchers decided that they woulld split the autonomic system up into parasympathetic and sympathetic systems. Further they thought it would be a good idea to subdivide the autonomic system into more divisions. They devised ...

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by daniel.kurz
Fri Oct 28, 2011 6:31 am
 
Forum: Human Biology
Topic: GI tract and enteric nervous system
Replies: 1
Views: 3484

Re: The Heart

Except for decreasing the heart rate and the force of contraction, PNS also reduces the conduction velocity of cardiac muscle fibers. Parasympathetic stimulation can also result in increased activity by glands that control bronchial secretions.

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by Dino77
Wed Aug 17, 2011 6:55 am
 
Forum: Human Biology
Topic: The Heart
Replies: 6
Views: 6620

GI tract and enteric nervous system

I am just wondering, enteric nervous system is part of autonomic nervous system right and it works together with parasympathetic and sympathetic branches? But here it says in the GI tract it divides into submucosal nerve plexus and myonteric nerve plexus, so in that those 2 plexuses ...

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by snezka18
Sun May 08, 2011 8:02 am
 
Forum: Human Biology
Topic: GI tract and enteric nervous system
Replies: 1
Views: 3484

The Heart Rate

How does the Sympathetic and Parasympathetic nervous systems affect the heart rate? I know the Sympathetic increases while PNS decreases but how exactly does each system increase or decrease the heart rate?

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by BioJunior
Sat Apr 30, 2011 2:26 am
 
Forum: Human Biology
Topic: The Heart Rate
Replies: 0
Views: 815
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