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Seta
Videos
In biology, setae are any of a number of different bristle- or hair-like structures on living organisms.
Setae on the foreleg of a mayfly
Setae on the foreleg of a mayfly
Close-up of the underside of a gecko's foot as it walks on vertical glass
Close-up of the underside of a gecko's foot as it walks on vertical glass
Common house geckos mating on a vertical glass window and showing lamellae under the feet
Common house geckos mating on a vertical glass window and showing lamellae under the feet
Pointed setae protruding into the fertile surface tubes of the bracket fungus Fuscoporia gilva
Pointed setae protruding into the fertile surface tubes of the bracket fungus Fuscoporia gilva
Hair
Videos
Hair is a protein filament that grows from follicles found in the dermis. Hair is one of the distinguishing characteristics of mammals. The human body, apart from areas of glabrous skin, is covered in
Seta
…In biology, setae (; sing. seta ; from Latin saeta 'bristle') are any of a number of different bristle- or hair-like structures on living organisms. Depending partly on their form and function, protostome setae may be called macrotrichia, chaetae, scales, or…
Scanning electron microscopy image of Merino wool (top) and human hair (bottom) showing keratin scales
Scanning electron microscopy image of Merino wool (top) and human hair (bottom) showing keratin scales
Anatomy of the hair shaft and bulb.
Anatomy of the hair shaft and bulb.
Hair follicle of a Felid.[vague]
Hair follicle of a Felid.[vague]
Human hair contains melanin which provides dark coloration and protection from UV radiation. Human hair can absorb and emit light across a wide range
Human hair contains melanin which provides dark coloration and protection from UV radiation. Human hair can absorb and emit light across a wide range of wavelengths. The image above depicts melanin autofluorescence at 365-400 nm excitation from a strand of dark brown human hair.