Our skin is the largest organ of the intergumentary system made up of multiple layers of ectodermal tissue. Skin plays important role in protecting body agains pathogens and excessive water loss. Its other function are insulation, temperature regulation, sensation, synthesis of Vitamin D and protection of Vitamin B folates.
Our skin consist of three main layers.
1. Epidermis
- divided into 5 sublayers; stratum corneum, lucidum, granulosum, spinosum, basale
2. Dermis
- contains hair folicles, sweat glands, sebaceous glands, apocrine glands, lymphatic vessels and blood vessels
3. Hypodermis
The entire surface of the skin consists of tiny holes commonly called pores or sebaceous hair follicles, which contain several sebaceous glands. The hair follicles are being provisioned by the sebaceous glands with an oily substance called sebum. Sebum is actually the oil that keeps your skin moist and pliable. As your skin renews itself, the old cells die, mix with your skin's natural oils, and are sloughed off.
Severely damaged skin will try to heal by forming scar tissue. This is often discolored and depigmented.
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