A.
大脑前动脉 prefix="o" ns="urn:schemas-microsoft-com:office:office" ?xml:namespace>
B.
大脑中动脉 prefix="o" ns="urn:schemas-microsoft-com:office:office" ?xml:namespace>
C.
大脑后动脉 prefix="o" ns="urn:schemas-microsoft-com:office:office" ?xml:namespace>
D.
椎动脉 prefix="o" ns="urn:schemas-microsoft-com:office:office" ?xml:namespace>
E.
基底动脉 prefix="o" ns="urn:schemas-microsoft-com:office:office" ?xml:namespace>