科普專欄–薯不揀單 - 三十秒科學–老鼠及兔仔會否流汗？

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。528Please respect copyright.ＰＥＮＡＮＡsMM7ScPIpw
528Please respect copyright.ＰＥＮＡＮＡIaxnd4rLtR
528Please respect copyright.ＰＥＮＡＮＡgOfYaLPMu2
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。528Please respect copyright.ＰＥＮＡＮＡfofhG46K6R
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。528Please respect copyright.ＰＥＮＡＮＡxjwo0M6T0f
528Please respect copyright.ＰＥＮＡＮＡMMXDQQywGW
（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。528Please respect copyright.ＰＥＮＡＮＡW5vUG00ybL
528Please respect copyright.ＰＥＮＡＮＡwSK80VoRQa
528Please respect copyright.ＰＥＮＡＮＡGphaXVoZjd
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。528Please respect copyright.ＰＥＮＡＮＡMg2SidZfUA
528Please respect copyright.ＰＥＮＡＮＡ6cYnknXTJ6
（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。528Please respect copyright.ＰＥＮＡＮＡ06OWycsYPe
528Please respect copyright.ＰＥＮＡＮＡVsufESlf0o
528Please respect copyright.ＰＥＮＡＮＡ77x7Wlmlvg
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。528Please respect copyright.ＰＥＮＡＮＡS3WRt3LxAw
528Please respect copyright.ＰＥＮＡＮＡ3QM1njGkJ6
528Please respect copyright.ＰＥＮＡＮＡqBQINWw59j
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。528Please respect copyright.ＰＥＮＡＮＡgdjpqPU0hX
528Please respect copyright.ＰＥＮＡＮＡBblPSvz7KU
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/toc528Please respect copyright.ＰＥＮＡＮＡjzXWYMVsu1
528Please respect copyright.ＰＥＮＡＮＡzOw807Ec0V
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。528Please respect copyright.ＰＥＮＡＮＡ4xzQzvEZHQ
528Please respect copyright.ＰＥＮＡＮＡ0Z4NDPlDEr
Link:528Please respect copyright.ＰＥＮＡＮＡFvtf6Ts442
https://www.penana.com/user/27349/%E8%96%AF%E4%BB%94%E8%81%9E%E8%8C%B1%E8%8E%89/portfolio528Please respect copyright.ＰＥＮＡＮＡNUugKN7694
528Please respect copyright.ＰＥＮＡＮＡf8cF4A6hRl
528Please respect copyright.ＰＥＮＡＮＡvRCoxHcHn4
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。528Please respect copyright.ＰＥＮＡＮＡ0dRnvrZ9vj

ns3.147.47.108da2

介面主題:

字體大小:

行距:

段距:

自動加載下一章