…A principle of blood circulation proposed by Adolf Fick (1829-1901) around 1872. It is essentially an expression of the law of conservation of mass. In other words, the amount of a particular substance flowing into a particular organ from the arteries in a unit time is the sum of the amount taken into the organ from the bloodstream and the amount flowing out into the veins. If the amount taken into the organ in a unit time is Q , the concentration in arterial blood is C A , and the concentration in venous blood is C V , and the blood flow rates of the arteries and veins are equal and considered to be F , then Q = F ( C A - C V ) and F = Q / ( C A - C V ). … *Some of the terminology that mentions "Fick, A." is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…フィックAdolf Fick(1829‐1901)によって1872年ころに提唱された血液循環に関する原理。本質的には質量保存の法則の一表現である。すなわち,単位時間に特定の器官に動脈から流入する特定の物質の量は,血流からその器官へ取り込まれる量と,静脈中へ流れ去っていく量の和であるというもの。単位時間にその器官が摂取した量をQ,動脈血中の濃度をCA,静脈血中の濃度をCVとし,動脈,静脈の血流量が等しく,それをFとみなすと,Q=F(CA-CV)となり,F=Q/(CA-CV)となる。… ※「Fick,A.」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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