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Control of Feeding - Anatomy & Physiology (view source)
Revision as of 19:16, 30 July 2008
, 19:16, 30 July 2008→The Vomit Reflex
*Emesis is the process of vomiting
*Emesis is the process of vomiting
*Persistant vomiting can be exhausting and can lead to metabolic alkalosis, dehydration and electrolyte inbalances which may require fluid therapy
*Extreme cases of persistant vomiting can lead to shock
*Retching involves the abdominal and chest walls contracting
*Retching involves the abdominal and chest walls contracting
*Inputs also from inner ear and higher centres
*Inputs also from inner ear and higher centres
*Emetic agents can be used in cases of gastric obstruction and to remove non-corrosive poisons from the stomach (for corrosive poisons charcoal can be used which will help absorb the substance and decrease its absorbtion into the GIT)
*Drugs cause emesis by irritating the gastric mucosa
*Emetic agents
*Emetic agents
**Catecholamines
**Catecholamines
**5-hydroxytryptamine
**5-hydroxytryptamine
**Substance P
**Enkephalins
**NK1 receptor agonists
*Anti-emetic agents can be used to treat motion sickness and to treat or prevent vomiting
*Anti-emetic agents
*Anti-emetic agents
(INCLUDE HERE)
**Dopamine (D2) receptor antagonists
**5-hydroxytryptamine antagonists
**NK1 receptor antagonists
**Muscarinic receptor antagonists
**Histamine (H1) receptor antagonists
**Gastroprotective agents
==Species Differences==
==Species Differences==