| 1. | The coronary ostia are involved in the dissection .
解剖时要牵动冠状动脉口。
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| 2. | The heart is dorsal and is provided with paired ostia .
心脏位于背方，有一对心门。
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| 3. | Ostium pharyngicum tub pharyngotympanic
咽鼓管咽口
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| 4. | Ostium tympanicum tub pharyngotympanic
咽鼓管鼓口
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| 5. | Ostia venosa atrioventricularia
房室静脉口
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| 6. | Ostium atrioventriculare sinistrum
左房室口
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| 7. | Ostium atrioventriculare dextrum
右房室口
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| 8. | Internal ostium of the uterus
子宫内口
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| 9. | Ostium arteriosum sinistrum
左动脉口
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| 10. | Ostium arteriosum dextrum
右动脉口
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