What Causes a Vagal Response?

Answer

A vagal response arises when the branch of your nervous system which controls heart rate and blood pressure malfunctions in response to a prompt such as the sight of blood. It is caused by common triggers such as heat exposure, sight of blood and fear of blood injury.
Q&A Related to "What Causes a Vagal Response"
Vazal Vagla Syncope is a very frustrating yet coming problem. Most people experience this under situation of bloos donation etc. This was explained to me as the flight or fight trigger
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You need to be more specific, I have no idea what you're talking about!
http://answers.yahoo.com/question/index?qid=201012...
So far this is what I experience in this case. None of this should be considered correct and given my experiences with doctors and that of the patient's, should perhaps be very suspect
http://www.quora.com/What-can-cause-extreme-locali...
The Neutral Stimulus does not cause any response. It is continually
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