Search Results for: Animals feathers and down
of various lengths—and an often hidden soft, short-haired undercoat. hair, a filamentous, often pigmented, outgrowth from the skin , is found only on mammals and often in a high-density of filaments per unit area. these threadlike fibers protrude from the outer layer of the skin, the epidermis , and
are tightly packed together. keratins also are a principle part of the cells in the nails, feathers , hooves, horny tissues, and tooth enamel of mammals. in humans , hair, with its variety of colors, textures, shape, length, density, and other qualities, adds to individual uniqueness and provides an...
https://www.newworldencyclopedia.org/entry/Hair