vomiting

vomiting,

ejection of food and other matter from the stomach through the mouth, often preceded by nauseanausea,
sensation of discomfort, or queasiness, in the stomach. It may be caused by irritation of the stomach by food or drugs, unpleasant odors, overeating, fright, or psychological stress. It is usually relieved by vomiting.
..... Click the link for more information. . The process is initiated by stimulation of the vomiting center of the brain by nerve impulses from the gastrointestinal tract or other part of the body. The vomiting center then sends out nerve impulses that precipitate spasmodic muscular contractions of the stomach wall and downward spasms of the diaphragm. The pressure generated then forces up the contents of the stomach. The vomiting mechanism may be in response to local irritation (diseases or disorders of the gastrointestinal tract, overburdening of the capacity and digestive capabilities of the stomach, ingestion of harmful foods or substances) or result from a metabolic disturbance (as in pregnancy) or from disorders or stimulation of the nervous system (e.g., migraine, motion sickness, infectious disease, brain tumor or injury, disagreeable odors). Vomiting may also be a reflex action to other spasmodic conditions (whooping cough, gagging).

Vomiting

a complex reflex action, during which the stomach contents are involuntarily expulsed through the mouth as a result of the excitation of the vomiting center, located in the medulla oblongata.

During vomiting, the pylorus undergoes a spasm and the cardia of the stomach opens. As a result of antiperistaltic contractions, food travels from the stomach to the esophagus and is expulsed to the outside by the spasmodic and jerky contraction of the respiratory musculature and muscles of the anterior abdominal wall. At the same time, the larynx rises and the epiglottis falls, which causes the glottis to close, thus preventing the vomit from entering the respiratory tract. The vomit is hindered from entering the nasal cavity by the raised soft palate.

Vomiting may be provoked by irritants acting on gastric mucosa, by the direct effect of toxins on the vomiting center, and by the stimulation of receptors, for example, in diseases of the abdominal organs, the brain, and meninges. Psychogenic and conditioned-reflex vomiting is also possible.

Vomiting is generally a defensive act because it helps remove harmful substances from the stomach. However, frequent vomiting, for example, the indomitable vomiting that occurs during pyloristenosis, may result in dehydration and disturbances of mineral metabolism and acid-base equilibrium.

Vomiting is dangerous during alcoholic intoxication and coma and when a patient is recovering from general anesthesia; atony of the epiglottis and soft palate may permit vomit to enter the nasal cavity and upper respiratory tract, which can cause asphyxia.

Vomiting is a specific symptom of many pathological conditions in such animals as carnivores, omnivores, and ruminants.

V. A. FROLOV

vomiting

[vom´it-ing] forcible ejection of contents of stomach through the mouth. Called also emesis and regurgitation.cyclic vomiting recurring attacks of vomiting.dry vomiting attempts at vomiting, with the ejection of nothing but gas.pernicious vomiting (vomiting of pregnancy) hyperemesis gravidarum.projectile vomiting vomiting with the material ejected with great force; seen commonly in congenital pyloric obstruction.stercoraceous vomiting vomiting of fecal matter.

vom·it·ing

(vom'it-ing), The ejection of matter from the stomach in retrograde fashion through the esophagus and mouth. Synonym(s): emesis (1) , vomition, vomitus (1)

vomiting

The act of ejecting vomitus. See Projectile vomiting.

vom·it·ing

(vom'it-ing) The ejection of matter from the stomach through the esophagus and mouth.
Synonym(s): emesis (1) , regurgitation (2) .

vomiting

Involuntary upward expulsion of the stomach contents. Vomiting is prompted by the presence of vomit-stimulating substances in the blood and effected by sudden, forceful downward movement of the DIAPHRAGM and inward movement of the abdominal wall. The stomach wall muscle plays no part.

vom·it·ing

(vom'it-ing) Ejection of matter from stomach in retrograde fashion through the esophagus and mouth.
Synonym(s): emesis (1) , vomitus (1) .

Patient discussion about vomiting

Q. I'm scared to be pregnant... vomiting and to give birth...Please tell me it's fine!! A. since how long are you pregnant? it seems that it just started. if you vomit a lot it is imperative that you drink enough water - still water like Vitel, Vichy, L'eau d'Evian that you get in your country and find bottles in glass - not in plastic! Plastic is anorganic and can't be assimilated in our bodies. there is no reason to be scared if you vomit. this means that you don't drink enough water. i know this. believe me and you will see that in the next days you will not vomit anymore. just keep me informed please!

Q. Dizziness and vomiting after a car accident, what can it be? Two days ago I was in a car accident and a car rear ended me. I went to the emergency room and was checked up and was discharged saying all is ok. Following the next morning I woke up and the whole room was spinning. I feel nauseous and find it hard to do daily activities. What do I have?A. It could be Vertigo. The sudden onset of vertigo usually indicates a peripheral vestibular disorder.
Symptoms of benign paroxysmal positional vertigo (BPPV) usually last a few seconds to a few minutes and are intermittent (i.e., come and go). They also may include lightheadedness, imbalance, and nausea, usually as a result of a change in position (e.g., rolling over in bed, getting out of bed). Please consult your GP about these symptoms.

Q. my friend recently told me that she throws up from time to time and it helps her balance her weight I told her I think that’s what bulimic girls do, but she insisted that it wasn’t something she can’t control or that comes after eating bursts (which she doesn’t have). It still seems wrong to me, but I would like to hear other’s opinions.A. bolimic girls try to avoid eating. then they get so frustrated that they eat like crazy and then feel guilty and threw ups. it's a bad condition that needs to and can be treated.

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Patient discussion about vomiting

vomiting

Synonyms for vomiting

noun the reflex act of ejecting the contents of the stomach through the mouth

Synonyms

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