These serve to shunt blood from the arterial to the venous side of the vascular system, thereby avoiding the capillaries, where exchange of oxygen and heat takes place.
血管球成为血流从动脉流至静脉的旁路，避免通过毛细血管产生氧气和热量交换。
2
Hypoxia produced a sustained increase in pulmonary arterial pressure (Ppa), the site of vasoconstriction was proximal to the lung capillaries.
缺氧时肺动脉压显著升高，这可能是肺毛细血管前肌性小动脉收缩的结果。
3
Vitamin c's antioxidant power helps protect heart health and is used by the body to support healthy capillaries and arterial walls.