Editing Chemoreceptor trigger zone (section)

==The vomiting center of the brain==
This integrates the emetic response. This is the area in which "a final decision is made" about whether to evoke an emetic response. This decision is based heavily on the information which the CTZ relays to the rest of the vomiting center, but also the chemoreceptors in the [[GI tract]], the information sent to the vomiting center by the [[vestibular system]], and higher order centers located in the cortex.<ref name="Porreca"/> The vomiting center is not a discrete or specific place in the brain, but rather an area consisting of many nuclei, axons, and receptors that together cause the physical changes necessary to induce vomiting.<ref name="Porreca"/> Also, emesis can occur by direct neural stimulation of the vomiting center.<ref>Encarnacion, H. J. et al. (2009). Vomiting. Compendium-Continuing Education for Veterinarians. 31(3): 122-+.</ref>