?再经各级小静脉汇合成上
...再经各级小静脉汇合成上、下腔静脉流回右心房,这一循环为体循环 ? Blood from the left ventricle injection through capillaries of the aorta and its branches flow around the body at all levels, Exchange material and tissue fluid, supplying tissue cells of oxygen and nutrients, removal of carbon dioxide and metabolic products, arterial blood to venous blood; then by 赢得荣誉 ? Won the honor ..