NC397S17

NC397S17

CH17 Summary珮馨

P.397~P.398

英打：

The CNS depends on an adequate and uninterrupted supply of blood and oxygen. The heart pumps oxygenated blood to the CNS through two arterial systems, vertebro-basilar and the carotid. Both of these arterial systems ascend and join the arterial circle of Willis at the base of the brain. Three cortical branches and numerous penetrating subcortical branches arise from the circle of Willis and supply blood to the brain. After perfusion, the deoxygenated blood is collected by veins and drained into the sinus system responsible for transmitting the collected blood and cerebrospinal fluid back to the heart for reprocessing.

翻譯：

中樞神經系統（CNS）仰賴充分血液和氧氣加上不間斷的供應。心臟幫浦將有氧血透過二個動脈系統，脊椎基本部位和頸動脈傳輸到中樞神經系統CNS。在基本的大腦結構中，這兩個動脈系統登入且連接Willis動脈圈。三個皮質分支和多數穿過大腦皮質下分支，從Willis連接和提供血液給腦子。佈滿血液後,缺氧血由靜脈收集和排出到靜脈系統，傳輸已被收集到心臟的血液和腦脊髓流體回到心臟的過程。