人、狗、鼠、兔均是恆溫動物,意思即是他們需要動用從新陳代謝中所獲取的能量來保持恆常體溫。612Please respect copyright.PENANAAjNJ0Y6IRW612Please respect copyright.PENANAepmcssOjxP
612Please respect copyright.PENANAbdYr3dBZST
在炎熱的天氣下,人及狗均能依靠流汗及喘氣作散熱的手段。612Please respect copyright.PENANAtsdCYOLEke
但鼠及兔皮下並沒有汗腺的關係,牠們沒有流汗的能力,同時亦沒有喘氣的習性。612Please respect copyright.PENANA4LSWQOyUfD
612Please respect copyright.PENANA30Xfaky2hC
(圖2)在行為方面,鼠及兔只好依靠躲藏或擺出不同的身體姿勢作散溫或保暖用途。612Please respect copyright.PENANAo3BPLkHkmz612Please respect copyright.PENANAvxMrxTbzFb
612Please respect copyright.PENANAsFqaQZg47G
生理方面,鼠及兔能透過豎毛(Piloerection),亦即是毛管戙來阻隔寒氣入侵,又或是擴張血管(Vasodilation)來加快散熱效能。612Please respect copyright.PENANAWFJzFet1Jl
612Please respect copyright.PENANAGhygrv9Tky
(圖3)老鼠的尾巴約佔全身皮膚面積5%左右,但約17%的體溫調節功能均是透過尾巴的血管擴張及收縮來控制。612Please respect copyright.PENANA0Q1hrpHQcd612Please respect copyright.PENANAgAjqHyn8Zj
612Please respect copyright.PENANAAzvXforH2h
至於兔仔的耳廓(Auricle),其表面的血管亦跟老鼠尾巴帶有著調節溫度的功能。612Please respect copyright.PENANALydTB5WMKM
612Please respect copyright.PENANA22mAb9OOpC
612Please respect copyright.PENANATx45sUlzdE
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。612Please respect copyright.PENANAuO1QNMwpO0
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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/toc612Please respect copyright.PENANAXUpJeHm5O5
612Please respect copyright.PENANAJPxJFy13r1
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。612Please respect copyright.PENANAKnZI6PgI2P
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Link:612Please respect copyright.PENANACAxfEEe3fS
https://www.penana.com/user/27349/%E8%96%AF%E4%BB%94%E8%81%9E%E8%8C%B1%E8%8E%89/portfolio612Please respect copyright.PENANAuPktRFFLFS
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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。612Please respect copyright.PENANAoYEvU7wQTo
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作者:
薯仔聞茱莉

篇 #176
三十秒科學–老鼠及兔仔會否流汗?
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