Angiographic Manifestation of Lower Extremity After Operation of Ring Constrict on Femur Vein
股浅静脉带戒环缩术后的血管造影表现
Now, in a typical stress response, your heart rate goes up, and your blood vessels constrict like this.
典型的压力反应是 心跳加速 血管收缩成这样
The blood vessels that supply the lungs constrict and their walls thicken, so they cant carry as much blood.
肺血管收缩, 管壁变厚, 因此他们不能运送大量的血液。
To conserve blood that will be needed by muscles, skin vessels constrict while vessels of the muscles dilate.
为了保存肌肉所需要的血液，皮肤血管收缩，而肌肉血管舒张。
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