Marossy A, Svorc P, Kron I, Gresová S
Department of Physiology, Medical Faculty, P.J. Safárik University, Kosice, Slovak Republic.
Clin Hemorheol Microcirc. 2009;42(4):239-58. doi: 10.3233/CH-2009-1192.
The main functions of the blood are the transport, and delivery of oxygen and nutrients, removal of carbon dioxide and waste products of metabolism, distribution of heat and signals of immune system. They are provided by circulation due to the driving force of the heart. Circulation of the blood depends on its rheological properties of the blood as well as on characteristics of the vessels through which the blood passes. The blood flow resistance is influenced by the complicated architecture of the vascular network and flow behaviour of blood components - blood cells and plasma. The obtained data based on analysis of influences on blood flow are differentiated in the dependence on place and level of investigation. At a macroscopic level the blood appears to be a liquid material, but at a microscopic level the blood appears to be a material with microscopic solid particles of varying size - various blood cells. From this point of view, we have to consider the blood flow in large vessels, and also on the level of microvessels. This division of facts of hemorheology is somewhat simplistic, but is very useful from the point of view of explanation and comprehension.
血液的主要功能是运输和输送氧气及营养物质、清除二氧化碳和代谢废物、散发热量以及传递免疫系统信号。这些功能由心脏的驱动力推动血液循环来实现。血液的循环取决于其流变学特性以及血液流经的血管特性。血流阻力受血管网络的复杂结构和血液成分（血细胞和血浆）的流动行为影响。基于对血流影响分析所获得的数据，会因研究的部位和层面不同而有所差异。在宏观层面，血液看似是一种液体物质，但在微观层面，血液似乎是一种含有大小各异微观固体颗粒（各种血细胞）的物质。从这个角度来看，我们既要考虑大血管中的血流，也要考虑微血管层面的血流。血液流变学的这种事实划分有些过于简单化，但从解释和理解的角度来看非常有用。
