基底支气管干中,内基底支分布于__________________;前基底支分布于____________________;外基底支分布于_________________;后基底支分布于__________________。
左房增大最早出现的X线征象是() ["A.左心缘第三弓突出","B.右心缘双边阴影","C.右心缘双房影","D.右前斜位食管吞钡左房压迹增加","E.左前斜位左主支气管变窄、抬高"]
皮肤神经末梢受到外界刺激后可释放的感觉神经肽有() ["A.降钙素基因相关肽","B.P物质","C.神经激酶A","D.选择素"]
肺癌空洞常见于() ["A.鳞癌","B.腺癌","C.大细胞未分化癌","D.小细胞未分化癌","E.细支气管-肺泡癌"]
软组织基本病变的X线表现为____________、____________、__________________、________________和______________。
局限性膈膨出,是由于____________或_____________、_____________所致。