血管系由起于心室的动脉系和回流于心房的静脉系以及连接于动、静脉之间的网状的毛细血管所组成。血液由心室射出，经动脉、毛细血管、静脉再环流入心房，循不不已，根据循环途径的不同，可分为大（体）循环和小（肺）循环两种。
实验侧手术显微镜下游离面神经切除腮腺，保护神经外血管系。
Capillary net on the facial nerve were protected from damaging on the experiment side when excising parotid glands and anatomying facial nerve by surgical microscope.
其中合并有颅面及骨骼系、呼吸系、消化系、心血管系、泌尿生殖系及隔的畸形等。
The varieties of those malformations were as follows : the malformations of face, skeleton, digestive system, respiratory system, cardiovascular and urogenital system, diaphragm, and so on.
术后心血管系并发症12例(循环不稳定3例、心律不齐9例)，支气管胸膜瘘4例，应激性溃疡2例。
Postoperative cardiovascular complications were seen in 12 cases (3 hypotension, 9 arrhythmia), bronchopleural fistula and stress related gastric ulcer was seen in 4 and 2 cases, respectively.
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