The Chemoreceptor Trigger Zone (CTZ)

Question

The chemoreceptor trigger zone (CTZ)
A) sends information to the emetic center in the medulla oblongata.
B) is called the vital center.
C) is located in the precentral gyrus.
D) is part of the visual cortex.

Accepted Answer

The chemoreceptor trigger zone (CTZ) is a group of specialized cells located in the area postrema of the fourth ventricle in the brain, outside the blood-brain barrier. It is activated by chemical stimuli such as emetogenic drugs, toxins, and metabolic disturbances, and sends signals to the emetic center in the medulla oblongata to initiate vomiting.