16 為甚麼心臟不會生癌?
w" p( }$ R# g7 |1 U2 {# | [" hTVBNOW 含有熱門話題,最新最快電視,軟體,遊戲,電影,動漫及日常生活及興趣交流等資訊。胃、肝、大腸、睪丸都會生癌,但為甚麼沒聽過有心臟癌呢?原因在於心臟以外的細胞都具有增殖機能,即使受了傷,只要過一段時間就能痊癒,這是因為細胞增殖使傷口癒合,然而心臟的細胞並不會增殖。癌細胞會持續增殖,接著破壞周圍的組織,就是因為心臟細胞不會增殖的關係,所以癌細胞是無法侵襲心臟。公仔箱論壇0 E! y: q1 R/ f4 w! h4 Y
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in fact, the heart is made of muscle, so it can develop cancer too, normally is the cardiac muscle itself, if it's benign, it's called myxoma; if it's malignant, it's called angisarcoma |