NSG5003 Chapter 41 Exam with Questions and Answers

NSG5003 Chapter 41 Exam with Questions and Answers Where in the brain is the vomiting center located? a. Hypothalamus c. Pons b. Medulla oblongata d. Midbrain ANSWER ANS: B The vomiting center of the brain lies in the medulla oblongata. The other locations listed are not related to vomiting 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. This selection is the only option that identifies a receptor that is involved in the process of vomiting. What type of vomiting is caused by the direct stimulation of the vomiting center by neurologic lesions involving the brainstem? a. Retch c. Duodenal b. Periodic d. Projectile ANSWER ANS: D Of the available options, only projectile vomiting is caused by the direct stimulation of the vomiting center by neurologic lesions, such as increased intracranial pressure, tumors, or aneurysms involving the brainstem. Considering the normal frequency of bowel evacuation, how infrequently can evacuation occur and still be considered within normal range? a. Once a day c. Once a week b. Once every 2 days d. Once every 2 weeks ANSWER ANS: C Normal bowel habits range from two or three evacuations per day to one per week.