what is hair?

Answer 1

Hair is also the name of a musical; see the stage production and the movie.

Young Girl Fixing her Hair, by Sophie Gengembre AndersonHair is a filamentous outgrowth of dead cells from the skin, found only in mammals. Although many other life forms, especially insects, show filamentous outgrowths, these are not considered "hair" regarding the accepted meaning of the term.

The primary component of hair fiber is keratin. Keratins are proteins, long chains (polymers) of amino acids. Keratin proteins form the cytoskeleton (miniature skeleton within a cell) of all epidermal cells. Keratin filaments run within a cell from the inside of the outer membrane to weave a "basket" around the nucleus of the cell. Keratins are a principle part of the cells in the epidermis, hair, nails, feathers, hooves, horny tissues and the enamel of teeth.

In some species, it is absent at certain stages of life. It projects from the epidermis, though it grows from hair follicles deep in the dermis. So-called "hairs" (trichomes) are also found on plants. The projections on arthropods, such as insects and spiders are actually insect bristles. The hair of non-human species is commonly referred to as fur. There are varieties of cats, dogs, and mice bred to have little or no visible hair.

Answer 2

Hair is a filamentous outgrowth of dead cells from the skin, found only in mammals

For more info. click the link below

Answer 3

hair is the stuff that grows out of your head

it is also protein ( dead skin cells are protein also )

Answer 4

Dead skin cells

Answer 5

Wow! U know how to party.

Answer 6

it is protein strands on your head that you can play with and make it look pretty or ugly or crazy :).

Answer 7

It is dead protein.

Answer 8

wow you know its christmas

Answer 9

dead cells