Question

Which type of drug depresses the Vomiting Reflex Center?

A. an antitussive

B. an antiemetic

C. an anticonvulsant

D. an an antibioticantidepressant

E. an antipyretic

Answer 1

Antiemetic

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.....

Antiemetics are drugs that block the vomiting reflex by impeding neurotransmission at central (CRTZ, emetic center) and peripheral (gastrointestinal epithelium) receptor sites. These drugs are classified based on the type of receptor they block...

Example-

Phenothiazines

Phenothiazines are broad-spectrum antiemetics that have antidopaminergic and antihistaminergic properties at low doses in the CRTZ and anticholinergic effects at higher doses at other central sites, including the emetic center...

Anticholinergic- Scopolamine

Antihistamines- Diphenydramine

5HT-3 antagonist- Ondansetron