Hair is composed of a certain type of protein known as keratin. As with any part of our body, hair has several parts of its biology. A chapter of hair consists of a shaft of hair "the part that is visible and grows over the skin and follicle" the party that the root of the hair grows and is below the epidermis. The hair bulb, which is a small but important part of the hair, produces the hair’s pigment color and is located at the end of the follicle. Hair biology: the structure and functions of different parts of hair
- hair follicles
The hair follicle is composed of different layers with different functions. The papilla, which lies at the base of the follicle contains capillaries that feed the cells. The bulb, hair’s living hand, is located at the lower end of the follicle. The bulb is the only part of hair that is fed by the capillaries.
Two sheaths surrounding the hair follicle. Pods protect the growth of hair shaft. The internal sheath covering the hair shaft and ends just below the opening of the oil glands. The outer sheath covering the hair shaft and continues until the oil glands. The erector pili, a muscle that attaches the gland outer sheath, when hired makes the hair stand up on your skin goose bump-producing.
Hair ShaftHair shaft are made up of dead protein called keratin. This protein is hard on three layers. These layers are the core or inner layer, the crust and the cuticle or outer layer. The axis of hair consists mainly of the crust. The cuticle is formed by the scales of a structure similar to that of roof tiles.
- Skin and Hair
The portion of hair that we see growing in our skin and scalp is the linchpin of hair. The follicle and root hair are just beneath the skin. One of the largest organs in the human body, the skin is often overlooked in terms of an individual’s health and welfare. The skin has a wide range of functions, some of these functions are:
Provide a flexible support and protection of the body’s in organs and tissues
Sweat glands in the skin provide a way to withdraw waste materials from the body
Provide a way to feel sensations such as temperature, pressure and pain
Protection against ultraviolet light
The skin also acts together with his hair in preventing the loss of heat. The skin and hair maintain body’s air temperature across the capture, providing an insulating layer of skin. The importance of hair and skin has gone beyond the typical biological functions and purposes. Apart from the health-related functions of hair and skin, both sides of the body are also major considerations when it comes to cosmetics. Hair and skin have become important parts in an individual’s declaration of uniqueness and individualism across different hair styles, colors and even piercing the skin.