By Anonymous - 23/04/2012 09:51 - United States
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When u are nervous the heart beats faster and that causes the mean arterial pressure to increase. Thus this sends signal to the chemoreceptor in the brain and that triggers stimulation of different receptor to help decrease mean arterial pressure. And one of the effect of this stimulation is vomiting. So i stand by wat i said.
38/55 - increasing heart rate does not trigger chemoreceptors. Chemoreceptors are triggered by chemical changes, hence the name, "chemo." An example of a chemoreceptor being used as a receptor is change in oxygen levels, carbon dioxide, pH, etc. While you were right that increasing heart rate does increase the arterial mean pressure, this mostly triggers baroreceptors, located at different vessels around the body to recognize increase of pressure. When blood pressure increases, the arterial walls are stretched and the baroreceptors send signals to the CNS (spinal cord AND brain, without a spinal cord, the brain would be useless). No need to act like a smartass on FML, this isn't a science class. Go back to school and learn your "scientific facts" right before you come here and try to show off with it.
Did she still say yes? :)