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。396Please respect copyright.PENANALBWMadp63n
396Please respect copyright.PENANABFCycCyYaK
396Please respect copyright.PENANAv0aQSp30Qw
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。396Please respect copyright.PENANA3E3dAf80Q2
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。396Please respect copyright.PENANAlzzH7kQkjn
396Please respect copyright.PENANABO2pVogMnd
(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。396Please respect copyright.PENANArgBBoim7t5
396Please respect copyright.PENANAHFEO8z3sEJ
396Please respect copyright.PENANADu6KJ9CpTR
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。396Please respect copyright.PENANArmUFyeepOx
396Please respect copyright.PENANA5czlhnyGDj
(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。396Please respect copyright.PENANAF1ZCsACB0E
396Please respect copyright.PENANAvNK8RgMJqA
396Please respect copyright.PENANAy2ZBoLkz2t
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。396Please respect copyright.PENANAB35MkxGino
396Please respect copyright.PENANAaYNCy6wCx2
396Please respect copyright.PENANAnTWwqUeHem
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。396Please respect copyright.PENANABQ1IkYnIcl
396Please respect copyright.PENANAbnJ2aKKNwC
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/toc396Please respect copyright.PENANAhjmE5tem2J
396Please respect copyright.PENANAC3vCgH6mNV
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。396Please respect copyright.PENANAAUwKjRkuXQ
396Please respect copyright.PENANA61ZxGt7kQg
Link:396Please respect copyright.PENANA73Hpt0gaFM
https://www.penana.com/user/27349/%E8%96%AF%E4%BB%94%E8%81%9E%E8%8C%B1%E8%8E%89/portfolio396Please respect copyright.PENANAzGQlHc48S3
396Please respect copyright.PENANAzZz3ZDKUnJ
396Please respect copyright.PENANACvGo21OIjJ
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。396Please respect copyright.PENANAjbgG4BdFJZ