血液循环流过静脉和动脉。
人与人之间的静脉和动脉大小变异很大，身体两侧的静脉和动脉也有不同。
Veins and arteries vary in size from one patient to another and from one side of the body to the other.
这被认为是由于由外周静脉和动脉因温暖液体而扩张所造成的更冷的外周血返回到中央循环所致。
This is thought to occur as colder peripherial blood returns to the central circulation as peripherial veins and arteries dilated from the warm fluid.
应用推荐