Stinging nettle (Urtica dioica) leaf - HD 影片檔

"Stinging nettle (Urtica doica) leaf. The stinging nettle is a herbaceous perennial flowering plant. It has hollow stinging hairs, called trichomes on its leaves and stems. They act like needles that inject chemicals into animal and human skin, creating a stinging sensation. The chemicals injected are acetylcholine, histamine, serotonin, moroidin, leukotrienes and sometimes formic acid. As the hairs grow upward along the stalk and outwards on the leaves, it is possible to touch them in the opposite direction without getting stung."
"Stinging nettle (Urtica doica) leaf. The stinging nettle is a herbaceous perennial flowering plant. It has hollow stinging hairs, called trichomes on its leaves and stems. They act like needles that inject chemicals into animal and human skin, creating a stinging sensation. The chemicals injected are acetylcholine, histamine, serotonin, moroidin, leukotrienes and sometimes formic acid. As the hairs grow upward along the stalk and outwards on the leaves, it is possible to touch them in the opposite direction without getting stung."
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詳情

來源:
Science Photo Library
創意 #：
618597327
授權類型：
權利準備 (Rights-Ready)
圖像集:
Image Bank Film
最大檔案大小：
1920 x 1080 像素 - 761 MB
短片長度：
00:00:10:00
上傳日期：
發佈資訊:
無需許可授權
原版：
QuickTime 8-bit Photo-JPEG HD 1920x1080 25p
類別：