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。345Please respect copyright.PENANAJeeTeWyocB
345Please respect copyright.PENANA2UmjcxNXPR
345Please respect copyright.PENANADtr1Exgr59
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。345Please respect copyright.PENANAIiIkVkLsSg
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。345Please respect copyright.PENANA9LCKIYFlE9
345Please respect copyright.PENANAgIy45lnF5c
(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。345Please respect copyright.PENANARNEam49KU7
345Please respect copyright.PENANAlJOrK6QJ4X
345Please respect copyright.PENANA4qxzgN7VsU
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。345Please respect copyright.PENANAmaHDyXMOtT
345Please respect copyright.PENANAujTHqLpjLW
(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。345Please respect copyright.PENANAfoHAQkl1Nb
345Please respect copyright.PENANA6x4BrX60yp
345Please respect copyright.PENANAzSVN77A9PI
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。345Please respect copyright.PENANA4zPRO7PWPo
345Please respect copyright.PENANABX46YduDuy
345Please respect copyright.PENANAIJSI1hmPZt
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。345Please respect copyright.PENANAuvEmYYgG8J
345Please respect copyright.PENANAop7MF3IP4P
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/toc345Please respect copyright.PENANAUcitJEhjvK
345Please respect copyright.PENANAtruabKYoHG
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。345Please respect copyright.PENANANtzuBqOzic
345Please respect copyright.PENANACVjxNT7TvR
Link:345Please respect copyright.PENANAX3vL4q2uke
https://www.penana.com/user/27349/%E8%96%AF%E4%BB%94%E8%81%9E%E8%8C%B1%E8%8E%89/portfolio345Please respect copyright.PENANAO2PetMnSuE
345Please respect copyright.PENANAKJwuGDpN9y
345Please respect copyright.PENANAHHJH4wgfQE
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。345Please respect copyright.PENANADjwoxWXDI7