The area postrema is located at the rhomboid fossa in the brainstem and is part of the vomiting center. This functional unit of the nervous system elicits vomiting when appropriately stimulated, thereby performing a protective role. Antiemetics inhibit this response as part of the treatment of traumatic brain injury and other neurologic conditions. What is … Area Postrema: Structure, Function & Diseases
Ondansetron is a major antiemetic that belongs to the setrone class of drugs. Ondansetron achieves its effects by causing inhibition of 5HT3 receptors. Because of this mode of action, ondansetron is also considered a serotonin receptor antagonist. The drug is marketed under the trade name Zofran and is used to treat nausea, vomiting, and emesis. … Ondansetron: Effects, Uses & Risks
The vomiting center is composed of the area postrema and the nucleus solitarius and is located in the brainstem. It triggers the process of vomiting in a defensive response to potential toxins that a person ingests through food. Cerebral vomiting is based on increased intracranial pressure or direct pressure on the vomiting center; possible causes … Vomiting Center: Structure, Function & Diseases
The geniohyoid muscle is one of the suprahyoid muscles that together open the jaw and participate in swallowing. The hypoglossal nerve is responsible for the nervous supply to the geniohyoid muscle. Accordingly, hypoglossal nerve palsy impairs the function of the muscle and causes dysphagia, which can occur in the context of numerous neurologic, muscular, and … Geniohyoid Muscle: Structure, Function & Diseases
The formatio reticularis form a nerve plexus in the human brain that consists of gray as well as white matter (substantia alba and substantia grisea) and traverses the entire brainstem. It extends to the spinal cord and consists of extensive, diffusely connected neuron networks. The formatio reticularis controls, among other things, waking and sleeping states, … Formatio Reticularis: Structure, Function & Diseases
Serotonin antagonists are drugs that block serotonin receptors, thereby attenuating or completely abolishing the effects of serotonin. Depending on receptor affinity, individual serotonin antagonists have different effects. What is a serotonin antagonist? Serotonin antagonists are drugs that block serotonin receptors, weakening or completely reversing the effects of serotonin. Due to their chemical properties, serotonin antagonists … Serotonin Antagonist: Effects, Uses & Risks
Droperidol is a drug in the neuroleptic drug class. It is administered as a preventive measure against nausea and vomiting after surgical procedures. What is droperidol? Droperidol is given as a preventive treatment for nausea and vomiting after surgical procedures. The drug droperidol belongs to a group called butyrophenones. Butyrophenones are a group of drugs … Droperidol: Effects, Uses & Risks
The rhombencephalon is a structure in the brain composed of the medulla oblongata and hindbrain. Its functions include the control of various reflexes, the regulation of vomiting, respiration, and blood circulation, and motor processes. Diseases and disorders affect the various functional centers and can result from lesions, neurological diseases, and specifically rhombencephalosynapsis. What is the … Rhombencephalon: Structure, Function & Diseases
