The Structure and Function of Hair


The Structure and Function of Hair

Hair is found on all parts of the body, but is particularly important to human beings due to its social significance. The appearance of hair depends largely on the shape and location of the follicles, which are connected to a smooth muscle called arrector pili. Medium or thick hair is usually straight and does not feel coarse. However, fine hair is translucent and will appear curly against dark backgrounds. As a result, fine hair is difficult to spot.

A typical strand of hair is made up of three layers: the cuticle (scalp) and cortex. The cuticle is the area above the scalp and is primarily made up of keratin, a protein similar to feathers and hoofs. The cortex is the main part of the hair. The medulla consists of cells that are square and flat. This structure is vital to the health of the hair.

The outermost layer is called the medulla, which contains melanin. The follicle is surrounded by the medulla, which protects the cortex. The cuticle, however, is a single layer of cells. The innermost layer of the hair is the cortex, which is the most important part of the hair shaft. The outer layer is the cuticle, which is located beneath the medulla.

The hair shaft is the hardest part of the human body. The outer layer is called the skin, which protects the face from the sun. The scalp is covered with keratin, which is a tough substance that prevents dripping into the eyes and nose. The hair shaft is a thin, hard filament. As a result, the skin surrounding the scalp is protected. As a result, the hair is extremely sensitive to air movement.

As the outer layer of the skin is the largest organ, the head has a high proportion of hair. The top layer is made up of dermal papilla cells. The dermal papilla is connected to the follicle. It is a part of the head, and is fed by the blood vessel at the bottom. This part of the follicle is called the catagen. The catagen layer is the part of the head, and is fed by AMPs.

The keratin portion of the hair is the most prominent feature of the type 3 of the follicle. It is made up of 18 amino acids, including cysteine, and forms an asynchronous mosaic pattern. The lanugo is a soft, flexible hair type. The hair is light in color, and features a thicker shaft than the other types. In addition, it is prone to breakage. Hence, if you have thick keratin, you are at the right place.

Most hair on the body is made from tiny vellus hairs. It has a bulb at the bottom. It is called the sebaceous. Its color is determined by the pigments. The hair root is the source of this pigment, and it is located in the follicle. As the name implies, it is located on the scalp, and is made of melanin. In contrast, the hair root is the center of the hair follicle.