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.
Video Clip Code:
SINCLAIR STAMMERS/CWMNI DA/SCIENCE PHOTO LIBRARY
Up to HD
Releases:No signed releases for this image.
Exclusivity:Please contact us, if you wish to license this image with exclusive rights.
Availability:Image availability cannot be guaranteed until time of purchase.