- open-closed circulation theory
- see closed-open circulation t.
Medical dictionary. 2011.
open-closed circulation theory
Look at other dictionaries:
closed circulation theory — one of the theories explaining how the blood in the spleen gets from the arteries to the venous sinuses; it holds that the capillaries empty directly into the venous sinuses. Cf. open circulation t. and closed open circulation t. Called also fast … Medical dictionary
closed-open circulation theory — the theory that both an open and a closed circulation are present in the spleen; e.g., a closed circulation in a contracted spleen may become an open circulation when the organ is distended. Cf. closed circulation t. and open circulation t … Medical dictionary
open circulation theory — one of the theories explaining how the blood in the spleen gets from the arteries to the venous sinuses; it holds that the capillaries open directly into the pulp reticulum, and that the blood gradually filters back into the venous sinuses.… … Medical dictionary
Open and closed systems in social science — Ludwig Bertalanffy describes two types of systems: open systems and closed systems. The open systems are systems that allow interactions between its internal elements and the environment. An open system is defined as a “system in exchange of… … Wikipedia
Closed system (control theory) — The terms closed system and open system have long been defined in the widely (and long before any sort of amplifier was invented) established subject of thermodynamics, in terms that have nothing to do with the concepts of feedback and… … Wikipedia
Timeline of Islamic science and engineering — This timeline of Islamic science and engineering covers the general development of science and technology in the Islamic world during the Islamic Golden Age, usually dated from the 7th to 16th centuries.From the 17th century onwards, the advances … Wikipedia
South America — South American. a continent in the S part of the Western Hemisphere. 271,000,000; ab. 6,900,000 sq. mi. (17,871,000 sq. km). * * * Continent, Western Hemisphere. The world s fourth largest continent, it is bounded by the Caribbean Sea to the… … Universalium
china — /chuy neuh/, n. 1. a translucent ceramic material, biscuit fired at a high temperature, its glaze fired at a low temperature. 2. any porcelain ware. 3. plates, cups, saucers, etc., collectively. 4. figurines made of porcelain or ceramic material … Universalium
China — /chuy neuh/, n. 1. People s Republic of, a country in E Asia. 1,221,591,778; 3,691,502 sq. mi. (9,560,990 sq. km). Cap.: Beijing. 2. Republic of. Also called Nationalist China. a republic consisting mainly of the island of Taiwan off the SE coast … Universalium
United States — a republic in the N Western Hemisphere comprising 48 conterminous states, the District of Columbia, and Alaska in North America, and Hawaii in the N Pacific. 267,954,767; conterminous United States, 3,022,387 sq. mi. (7,827,982 sq. km); with… … Universalium
