51³Ô¹ÏÍø

Stinging nettle (Urtica dioica) leaf - HD stock video

"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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DETAILS

Credit:
Science Photo Library
51³Ô¹ÏÍø #:
618597325
License type:
Rights-ready
Collection:
Image Bank Film
Max file size:
1920 x 1080 px - 1 GB
Clip length:
00:00:14:00
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No release required
Mastered to:
QuickTime 8-bit Photo-JPEG HD 1920x1080 25p
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