斑馬魚在成長的時候大多處於相對透明的狀態,其器官生長的過程可以說是亳無保留地呈現在眾人眼前。561Please respect copyright.PENANAy7refQInaD561Please respect copyright.PENANANSAVhmMFV6
561Please respect copyright.PENANA0cMrR3Up22
對於專門研究生長機制的科學家來說,班馬魚絕對是一道非常方便用於研究的動物模型。561Please respect copyright.PENANAmIOfYGuIKi
561Please respect copyright.PENANAxJZAWWr2Dl
561Please respect copyright.PENANA6hmlF36iN5
(圖2)約於受精後24小時,班馬魚的心臟亦將形成,且能收縮膨脹把紅血球送遍全身。561Please respect copyright.PENANASL9HCQqGB0561Please respect copyright.PENANA1lG7XCRYFK
561Please respect copyright.PENANAxTIUfL0N5T
有科學家嘗試把一氧化碳注進水裡,試圖透過一氧化碳與紅血球的結合,抑制紅血球輸送氧氣的能力,從而探討初生時候的紅血球有甚麼功用。561Please respect copyright.PENANAHxysbEm0Yc
561Please respect copyright.PENANAgEhFeuBryU
結果可謂出人意表,就算利用一氧化碳抑制紅血球輸氧的能力,頭5日內,斑馬魚依舊能吸取及耗用氧氣,其耗氧量跟對照組合並無分別。561Please respect copyright.PENANALfJ6i8rJgh
561Please respect copyright.PENANA53bGCIfurO
561Please respect copyright.PENANA6DioNu8zQ7
(圖3)從圖中可見,隨著生長時數推展,班馬魚的心臟跳動速度亦有所增長,但無論是否注入一氧化碳,其跳動速度亦無太大的分別。561Please respect copyright.PENANA53NBA8TWyn561Please respect copyright.PENANAbU8UtZB8s9
561Please respect copyright.PENANANoBVlJizl3
這相信是因為頭5日的班馬魚體積非常微細,氧氣能夠透過自然擴散的方式進入班馬魚內部,並不需要紅血球的任何協助。561Please respect copyright.PENANA9wtQipi5mR
561Please respect copyright.PENANAT8dtZ4uiK0
既然頭5日氧氣輸送並不需要紅血球的協助,那為何在受精的第一日後便已發展出撲撲跳的心臟呢?561Please respect copyright.PENANALwOTiTIYcZ
除了氧氣後,電解質或營養等物質均需透過血液循環系統輸送,它們自然擴散的效率比氧氣為低,需要依靠澎湃的心臟經由血管送到各部位內外。561Please respect copyright.PENANASe3VZ4E7Kz
561Please respect copyright.PENANAuUN6Oe8viV
561Please respect copyright.PENANA0kwvJJENrD
561Please respect copyright.PENANA3JA8ZSV6Oa
如果想我快啲出文的話,請入去Penana網站科普專欄–薯不揀單俾一個like以及Bookmark,這對我非常之重要。561Please respect copyright.PENANAS1NjFYXdXV
561Please respect copyright.PENANAk9Lx4VGEJZ
Link: https://www.penana.com/story/66244/%E7%A7%91%E6%99%AE%E5%B0%88%E6%AC%84-%E8%96%AF%E4%B8%8D%E6%8F%80%E5%96%AE/toc561Please respect copyright.PENANACSAziGhF3H
561Please respect copyright.PENANA5qIFeHyjjY
同時亦可以在Penana網站裡按「買一嚿/半嚿薯仔」,以課金的方式推動我繼續搜羅資料寫文,多謝。561Please respect copyright.PENANA6aWlJM3Y49
561Please respect copyright.PENANAtgO8jU2oHr
Link:561Please respect copyright.PENANAmeg248xKa0
https://www.penana.com/user/27349/%E8%96%AF%E4%BB%94%E8%81%9E%E8%8C%B1%E8%8E%89/portfolio561Please respect copyright.PENANAaqvpGN3d0E
561Please respect copyright.PENANAY2omeIti0A
561Please respect copyright.PENANA1RwVA0e8IQ
除非Facebook及IG重開侵侵的account,否則我的IG將不會再作更新,只會寄居本土LIHKG及Penana。561Please respect copyright.PENANA0zynhTyJSf
561Please respect copyright.PENANARvF7nbsFEe
Ref1:https://pubmed.ncbi.nlm.nih.gov/8756015/
561Please respect copyright.PENANAyShTygzgSF