Absorption: drugs into the blood circulation from the site of administration, said the process of absorption, in addition to the direct injection of blood vessels, in general, go through the cell membrane transport. Subcutaneous or intramuscular administration can be absorbed only through the capillary walls. Oral administration of the first through the gastrointestinal mucosa, weak acid drugs can be absorbed in the stomach, but most are absorbed in the intestines, the stomach and intestines through the capillaries, first into the hepatic portal vein. Certain drugs inactivated by intestinal and liver metabolism, the drugs enter the systemic circulation reduced, is called first pass effect, such as oral nitroglycerin, about 99% can be inactivated by first-pass effect and failure to use sublingual drugs through the hepatic portal vein may undermine the role of small and fast. In addition, factors affecting absorption of pH, solubility, delivery sites and bio-availability (formulation), are so absorbed are quite different.
Translated by Google
Medical Dictionary
Function of the digestive tract to absorb knowledge, and clinical practice of everyday life are important. According to various substances are absorbed by the necessary conditions to _select_, mix and food preparation, will undoubtedly improve the body's use of food value. Digestive tract absorption are not limited to food, but also absorption of drugs. It is often clinically important gastrointestinal drug treatment as a route of administration. Such as coronary heart disease first aid drugs - in patients with nitroglycerin sublingual tablets, oral mucosa can be absorbed. Another example is a common clinical use of gastrointestinal absorption of salts of choice, it will be difficult to absorb magnesium sulfate as a laxative in patients with constipation.
Translated by Google
Encyclopedia
xishou Absorb absorption ① absorption within the digestive tract, digestion of food products and a variety of water and salts and other items through the intestinal epithelial cells into the blood and lymph in the process. ② refers to the drug site of drug into the blood from the process.
Translated by Google
English Expression
: assimilate, absorption band, uptake, resorption
n.: soak up, molar absorbance, take in, suction, suck in, suck up, absorbance, occlusion, absorbing or being absorbed, intussusception, in mentally, ingestion, fully understand, as a recruit, imbibition, absorption
v.: enlist, recruit, Attract, intussuscept, imbibe, absorb, take