|MadSci Network: Medicine|
Hi Lilyi It's all to do with the autonomic nervous system. Vomiting is a reflex action which may be caused by a wide variety of stimuli, mediated in part by the autonomic nervous system, which, when activated in this way, leads to other end results of autonomic activity, such as sweating, salivation, and tachycardia (rapid heartbeat). Best wishes Doc C-P
Try the links in the MadSci Library for more information on Medicine.