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。523Please respect copyright.PENANAhqMe9fyUaV523Please respect copyright.PENANAYzgdMgNy5B
523Please respect copyright.PENANAnRXis3g2e4
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。523Please respect copyright.PENANAaAXrBHySY8
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。523Please respect copyright.PENANAozskvLRWnW
523Please respect copyright.PENANAm0VhBNuVZ2
(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。523Please respect copyright.PENANAWm4Z4d2xd9523Please respect copyright.PENANAYzpHTVY1DA
523Please respect copyright.PENANAqD33mFN8Qa
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。523Please respect copyright.PENANA7Q5U9VgPpJ
523Please respect copyright.PENANAAVqjQPtAPp
(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。523Please respect copyright.PENANAMXeZON60z4523Please respect copyright.PENANAS9GN5Dfi5N
523Please respect copyright.PENANAruGNIuzSoG
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。523Please respect copyright.PENANAL4xPjNDy1l
523Please respect copyright.PENANAPepzwQTqTj
523Please respect copyright.PENANAiJiJKKPMHr
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。523Please respect copyright.PENANAZIZ5pr3npC
523Please respect copyright.PENANArCgtG5PM3F
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/toc523Please respect copyright.PENANA8QnuMWA1qV
523Please respect copyright.PENANAGoTap7LAH4
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。523Please respect copyright.PENANAlNXPxMxjKG
523Please respect copyright.PENANAdxShA4U0SZ
Link:523Please respect copyright.PENANA3WaLr66D9J
https://www.penana.com/user/27349/%E8%96%AF%E4%BB%94%E8%81%9E%E8%8C%B1%E8%8E%89/portfolio523Please respect copyright.PENANACdtmT4hmV6
523Please respect copyright.PENANAx8xidLKhU4
523Please respect copyright.PENANACLiUWB8i7R
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。523Please respect copyright.PENANAjL4A4ADmku