Process of respiration (1)External respiration:the 呼吸的3个连续过程： 血液橘环 exchange process of 02 2 and 1.外呼吸，包括呼 组织 吸器官的通气和呼吸 CO2 between lungs and 器官换气 environment and the exchange 2.气体的运输， process between lung and blood. 3.内呼吸，包括 血液与组织、细胞 间的气体交换。 (2)The transportation of 02 and CO2 by the blood (3)internal respiration:the exchange of 02 and CO2 between the blood and the tissueProcess of respiration (1) External respiration: the exchange process of O2 and CO2 between lungs and environment and the exchange process between lung and blood. (2) The transportation of O2 and CO2 by the blood (3) internal respiration: the exchange of O2 and CO2 between the blood and the tissue