| hepatic veins | Veins which drain the liver. (12 Dec 1998) |
|---|---|
| hepatic vein thrombosis | Occlusion of the hepatic veins caused by thrombi or fibrous obliteration of the veins. (12 Dec 1998) |
| hepatic veno-occlusive disease | Blockage of the small- or medium-sized hepatic veins due to nonthrombotic subendothelial oedema which may progress to fibrosis. (12 Dec 1998) |
| hepatic venous segments | Each of the four territories of the liver separately drained by the hepatic veins. Synonym: hepatic venous segments. (05 Mar 2000) |
| sphincter of hepatic flexure of colon | Physiological sphincter at the level of the right colic flexure. (05 Mar 2000) |
| echinococcosis, hepatic | Helminth infection of the liver caused by echinococcus granulosus or echinococcus multilocularis. (12 Dec 1998) |
| tuberculosis, hepatic | Infection of the liver with tubercle bacilli producing localised granulomata, miliary lesions, or tuberculoma. (12 Dec 1998) |
| left hepatic artery | <anatomy, artery> Left branch of proper hepatic artery; terminal branch off proper hepatic artery supplying left lobe of the liver. Synonym: ramus sinister arteriae hepaticae propriae. (05 Mar 2000) |
| left hepatic duct | The duct that drains bile from the left half of the liver, including the quadrate lobe and the left part of the caudate lobe. Synonym: ductus hepaticus sinister. (05 Mar 2000) |
| left hepatic veins | Veins draining the lateral segments [II & III] of the left lobe of the liver which join to form a single or paired trunk of variable size which usually (90% of the time) merges with that formed by the middle hepatic veins prior to entering the terminal portion of the superior vena cava. Synonym: venae hepaticae sinistrae. (05 Mar 2000) |
| ABO blood group | <haematology> The major human blood type system which describes the oligosaccharide glycoprotein antigens found on the surface of human blood cells. According to the type of antigen present, a person may be assigned a blood type of A, B, AB or O. A second type of antigen, the Rh factor, renders a positive or negative blood type. The ABO blood group system is important because it determines who can donate blood to or accept blood from whom. Type A or AB blood will cause an immune reaction in people with type B blood and type B and AB blood will cause a reaction in people with type A blood. Conversely, type O blood has no A or B antigens, so people with type O blood are universal donors. And since AB blood already produces both antigens, people who are type AB can accept any of the other blood types without suffering an immune reaction. (04 Jul 1999) |
| Almen's test for blood | Glacial acetic acid, gum guaiac solution, and hydrogen peroxide are added to an aqueous suspension of the suspected stain; if occult blood or blood pigment is present, a blue colour develops. Synonym: guaiac test, Schonbein's test, van Deen's test. (05 Mar 2000) |
| arterial blood | Blood that is oxygenated in the lungs, found in the left chambers of the heart and in the arteries, and relatively bright red. (05 Mar 2000) |
| arterial blood gas | A test which analyses arterial blood for oxygen, carbon dioxide and bicarbonate content in addition to blood pH. Used to test the effectiveness of respiration. Acronym: ABG (17 Oct 1997) |
| blood | <haematology> Considered a circulating tissue composed of a fluid portion (plasma) with suspended formed elements (red blood cells, white blood cells, platelets). Arterial blood is the means by which oxygen and nutrients are transported to tissues, venous blood is the means by which carbon dioxide and metabolic by-products are transported for excretion. (05 Jan 1998) |