Reindeer hair, SEM
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Reindeer hair, SEM
Reindeer hair. Coloured scanning electron micrograph (SEM) showing the structure of hairs from a reindeer (Rangifer tarandus). The reindeer coat has two layers of fur, a dense woolly undercoat (thin hairs) and a longer-haired overcoat consisting of hollow, air-filled hairs (larger hairs). This helps it to keep warm in the extreme cold of its holarctic habitat. The outside of the hair, the cuticle, is covered in overlapping scales of dead cells containing the protein keratin. Magnification: x110 when printed 10 centimetres wide
Science Photo Library features Science and Medical images including photos and illustrations
Media ID 9195273
© POWER AND SYRED/SCIENCE PHOTO LIBRARY
Animal Body Arctic Cold Cuticle Dead Deer Domestic Hair Hairs Hairy Holarctic Hollow Keratin Layer Mammal Overlapping Rangifer Tarandus Reindeer Ruminant Scale Scales Thick Thin Caribou Protein
EDITORS COMMENTS
This print showcases the intricate structure of reindeer hair, revealing the secrets behind this majestic creature's ability to withstand extreme cold. The image, captured using a scanning electron microscope (SEM), unveils the dual-layered coat that keeps the reindeer warm in its holarctic habitat. The dense woolly undercoat, composed of thin hairs, acts as an insulating layer against frigid temperatures. Above it lies the longer-haired overcoat consisting of hollow hairs filled with air. This ingenious design further enhances thermal insulation and helps regulate body temperature in subarctic environments. Examining the surface of these hairs reveals a fascinating pattern: overlapping scales made up of dead cells containing keratin protein form a protective cuticle. These scales not only shield the hair from external elements but also contribute to its distinctive appearance. As we delve into this microscopic world, we gain insight into how nature equips animals to thrive in their habitats. This mesmerizing photograph serves as a reminder of both the beauty and complexity found within even seemingly ordinary aspects of our natural world.
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