Noun1.crus- the leg from the knee to foot limb- one of the jointed appendages of an animal used for locomotion or grasping: arm; leg; wing; flipper leg- a human limb; commonly used to refer to a whole limb but technically only the part of the limb between the knee and ankle ...
下三分之二后心脏博尔河畔的由左心室(LV)和上部三分之一由左心房形成。淡淡的不透明度(箭头)出现在后cardiophrenic角度代表了下腔静脉(IVC),因为它漏入右心房。升主动脉,主动脉弓和近端降主动脉是很好看到这个老年患者。主动脉是不是也见于正常的青壮年。