NSG 5003 Chapter 41 Alterations of Digestive Function Exam with Q and A

NSG 5003 Chapter 41 Alterations of Digestive Function Exam with Q and A Where in the brain is the vomiting center located? a. Hypothalamus b. Medulla oblongata c. Pons d. Midbrain ANSWER ANS: B The vomiting center of the brain lies in the medulla oblongata. Antiemetic agents, such as domperidone and haloperidol, are antagonists for which receptors? a. 5-Hydroxytryptamine (5-HT) serotonin b. Histamine-2 c. Acetylcholine d. Dopamine ANSWER ANS: D Metoclopramide, domperidone, and haloperidol are dopamine antagonists, making them effective antiemetic agents. What type of vomiting is caused by the direct stimulation of the vomiting center by neurologic lesions involving the brainstem? a. Retch b. Periodic c. Duodenal d. Projectile ANSWER ANS: D