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血液是循环于心血管系统中的流动组织,是体液的重要组成部分。全血是由液态的血浆与混悬在其中的红细胞、白细胞、血小板等有形成份组成。由于血液在循环系统中不断地流动,它在运输气体(氧气和二氧化碳)、营养物质、代谢物、激素以及维持机体内环境各种因素(酸碱度、渗透压、体液容量、电解质等)的相对稳定、调节体温、防止失血(血液凝固)、免疫等方面具有重
Blood is a circulating tissue that circulates in the cardiovascular system and is an important part of body fluids. Whole blood is composed of liquid plasma and suspended in the red blood cells, white blood cells, platelets and other visible components. Due to the constant flow of blood in the circulatory system, it is relatively stable in the transport of gases (oxygen and carbon dioxide), nutrients, metabolites, hormones and various factors that maintain the body’s environment (pH, osmotic pressure, body fluid volume, electrolytes, etc.) , Regulate body temperature, prevent blood loss (blood coagulation), immune and other aspects of weight