This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Physiology
Vomiting centre is situated in the: September 2008 
Select and explain. 
A. Hypothalamus, B. Midbarin, C. Pons, D. Medulla
D: Medulla
Answer: D: Medulla 
Explanation: Ans. D: MedullaVomiting is believed to be controlled by two distinct brain centres--the vomiting centre and the chemoreceptor trigger zone--both located in the medulla oblongata.The vomiting centre initiates and controls the act of emesis, which involves a series of contractions of the smooth muscles lining the digestive tract