Poi-nòng-kut
外觀
![](http://chped.net/https/upload.wikimedia.org/wikipedia/commons/thumb/8/83/Gray_111_-_Vertebral_column.png/200px-Gray_111_-_Vertebral_column.png)
Poi-nòng-kut (背囊骨) me cho-tet ôn-to chit-chhùi, he ngìn-lui lâu khì-thâ chit-chhùi thung-vu̍t ke yit-chúng kut-thèu.
Poi-nòng-kut (背囊骨) me cho-tet ôn-to chit-chhùi, he ngìn-lui lâu khì-thâ chit-chhùi thung-vu̍t ke yit-chúng kut-thèu.