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Chemoreceptor trigger zone (CTZ) in the medulla of the brainstem, which communicates with the vomiting center (to mediate the vomiting reflex).
Vomiting clears the dige stive system, so if the child has been vomiting for more than 12 hours (max), then get him/her to a hospital asap.
normal!
hematemesis
Is nasty. Everyone should know that?