题目内容

在胸部经第9、第10胸椎椎间盘的水平断面上

A. 前段消失
B. 可见下腔静脉
C. 左心房消失
D. 右侧膈肌切开
E. 可见肺段支气管及肺动静脉呈扇形分布

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l、在胸部经第5、第6胸椎椎间盘的水平断面上,见不到

A. 升主动脉
B. 上腔静脉
C. 左肺动脉
D. 气管隆嵴
E. 胸腺

下列肺段中,右肺横断层面上先出现的肺段是:

A. 内侧段
B. 外侧段
C. 内侧底段
D. 外侧底段
E. 前底段

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