Skin consists of two main layers, the epidermis and the dermis. The epidermis is composed of superficial layer which consists of dead cells, and inner layer which consists of living cells.
The layer of skin below the epidermis is called the dermis. It consists of connective tissues which contain blood vessel, nerve endings, sweat glands, sebaceous glands and hair follicles.
The appendages of the skin include the hair and the nails. Each hair consists of a shaft and a root. The shaft is above the surface of the skin but the roof is below. The nails grow from nail beds which are also below surface of the skin.
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