The skin, the body's largest organ constantly regenerates, contains sensory receptors, and produces melanin for pigmentation.
The outermost layer of the skin, the stratum corneum, constitutes the actual skin barrier. It’s comprised of dead cells made of keratin – the same protein of which nails and hair are made.
The stratum corneum is very thin, with little keratin. Skin is used for gas exchange. Thick keratin layer would restrict oxygen exchange and water absorption. Amphibians have many mucus glands to ...
The stratum corneum is very thin, with little keratin. Skin is used for gas exchange. Thick keratin layer would restrict oxygen exchange and water absorption. Amphibians have many mucus glands to ...