This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Misc., Subject name: Physiology
[{'content': 'Vomiting center is located at \nSelect and explain. \nA. Area postrema, B. Amygdala, C. Pons, D. Hypothalamus', 'role': 'user'}, {'content': 'Answer: A \nExplanation: (A) Area postrema # Chemoreceptor cells in the medulla initiate vomiting when they are stimulated by certain circulating chemical agents.> Chemoreceptor trigger zone cells are located in Area postrema, a V-shaped band of tissue on the lateral walls of the fourth ventricle near the apex.> Swallowing, coughing, sneezing, gagging, and vomiting are also reflex responses integrated in the medulla oblongata.> Vomiting is another example of the way visceral reflexes integrated in the medulla include coordinated and carefully timed somatic as well as visceral components.> Vomiting centre in the reticular formation of the medulla really consists of various scattered groups of neurons in this region that control the different components of the vomiting act.', 'role': 'assistant'}]