Multiple choice

In a human brain, the emetic centre is a region outside the blood-brain barrier. It allows toxins in the blood to be sensed and vomiting can be induced. It is found in which of the following parts of the brain?

  1. Reticular formation

  2. Raphe nucleus

  3. Locus ceruleus

  4. Area postrema

  5. Inferior olive
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Yes, it is correct. The area postrema is found adjacent to the dorsal motor nucleus of the vagus nerve in the posterior aspect of medulla oblongata next to the fourth ventricle. It functions as an emetic centre, sensing toxins and initiating vomiting to help remove the toxins from the gastrointestinal system.

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