Knowra Vomiting Vomiting Vomiting is the forceful expulsion of stomach contents through the mouth. It is coordinated by brainstem circuits and abdominal and respiratory muscles, often as a protective response to harmful stimuli.
Emetic reflex : A coordinated neural and muscular response that produces nausea, retching, and vomiting. This reflex organizes the contractions and airway protection that make vomiting possible.
Gastroenteritis : Inflammation of the stomach and intestines, commonly caused by infection and associated with diarrhea and vomiting. Infection and intestinal irritation commonly provoke vomiting in this illness.
Antiemetic : A drug or other treatment that prevents or relieves nausea and vomiting. Antiemetics target different signals and receptors involved in the vomiting reflex.
Nausea : An unpleasant sensation of needing or being likely to vomit, often without expulsion. Nausea may precede vomiting, but it can occur without any stomach contents being expelled.
Area postrema : A brainstem region with a permeable blood–brain barrier that detects circulating toxins and drugs. It can trigger vomiting after sensing substances in the blood.
Motion sickness : A syndrome of nausea, dizziness, and related symptoms caused by conflicting sensory signals during movement. Conflicting motion signals can activate neural pathways that induce vomiting.
Ondansetron : A serotonin 5-HT3 receptor antagonist used to prevent and treat nausea and vomiting. It blocks serotonin signaling that contributes to vomiting, especially after chemotherapy or surgery.
Regurgitation : The relatively effortless return of swallowed food or liquid into the mouth, without forceful retching. Unlike vomiting, regurgitation usually lacks the coordinated forceful reflex.
Nucleus tractus solitarius : A medullary brainstem nucleus that integrates visceral sensory signals and helps coordinate autonomic responses. It receives emetic signals and helps organize the brainstem response.
Pregnancy nausea and vomiting : Nausea and vomiting occurring during pregnancy, especially in early pregnancy. Hormonal and other pregnancy-related changes can make vomiting a recurring symptom.
Show all 22