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。343Please respect copyright.PENANAwhExs9MsRj
343Please respect copyright.PENANAX39SJwdI5C
343Please respect copyright.PENANAXEX6dNuUPj
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。343Please respect copyright.PENANACKjD240hhH
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。343Please respect copyright.PENANAAgoqx04zgR
343Please respect copyright.PENANACtw4xQcfc4
(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。343Please respect copyright.PENANA8vAr0ewgI8
343Please respect copyright.PENANA93vQEuh6hM
343Please respect copyright.PENANA1byM47X4uX
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。343Please respect copyright.PENANArA2xBzeZyc
343Please respect copyright.PENANAyjWFAnnH36
(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。343Please respect copyright.PENANAbuZAZUOa86
343Please respect copyright.PENANAiJZXB6GPeB
343Please respect copyright.PENANASAPbXousUa
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。343Please respect copyright.PENANADlj4iZUwA2
343Please respect copyright.PENANAckhRg19RBz
343Please respect copyright.PENANAfwsHUkDI3X
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。343Please respect copyright.PENANAT69BDSOPOp
343Please respect copyright.PENANAb5014JxDEl
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/toc343Please respect copyright.PENANA4oAi15JpLV
343Please respect copyright.PENANAo3lmYStGr0
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。343Please respect copyright.PENANA4PqTO8HjzO
343Please respect copyright.PENANA6qzc1frDgN
Link:343Please respect copyright.PENANAQENEfv9gha
https://www.penana.com/user/27349/%E8%96%AF%E4%BB%94%E8%81%9E%E8%8C%B1%E8%8E%89/portfolio343Please respect copyright.PENANAeSfYFo23il
343Please respect copyright.PENANAtn0Cyxzelf
343Please respect copyright.PENANAvt5CMcOfyU
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。343Please respect copyright.PENANAAZ1I3XZ8SI