Biology Experiment

If you see a beautiful and long hair would have looked ordinary. They grew up as usual you believe. Biology Hair Growth is a procedure that is extraordinary. Hair began to appear on the body when still in the womb. By the time a fetus reaches 22 weeks of age, there are already 5 million follicles that grow in the fetus.

You will know the biology of hair growth in the understanding of the anatomy of hair very first.

Consists of hair follicles, which are embedded in the skin, and hair shaft that appears on your body. The follicle itself consists of several layers with each layer has a specific function. Which is composed of papillae located at the base of the follicle. The second is a layer of capillaries that connect to the papilla and they serve to supply blood to the cells that surround the lower part of hair known as the bulb.

Sheath surrounding the follicle, there are two, namely inner and outer sheath, which is created to protect the hair shaft from damage and does not inhibit growth of hair biology, and to assist growth in the right direction. And the second is in the sheath. Sheath in the run to the side of the hair shaft and ends at the glands (sebaceous) oil. Outer sheath runs to the gland and ends at the erector pili muscle. This is the muscle that causes your hair stand up when startled.

Hair shaft consists of 3 layers of dead protein cells known as keratin. The first layer is the deepest, recognized as the medulla, these layers are not always present in every hair shaft.

The second layer, known as the cortex, there need to be at most of the hair shaft. Hair color is largely determined by the pigmentation contained in this cortical layer.

And the third layer is the outermost layer referred to as the cuticle. This layer consists of a series of overlapping cells. Hair luster and sheen comes from the cuticle layer.

How scalp hair grows at an average rate of six inches per year, or only 3-4 mm per day. There are three distinct stages of hair growth.

Biology of hair growth by way of catagen phase. This phase is experiencing a transition phase that runs about two to 3 weeks. At any given time about three% of your hair expertise this phase. There is no hair growth in the course of this phase, even though component of the hair root sheath will shrink although the roots will stick.

The telogen phase. This stage is recognized as a “rest period” experienced by about 15% of your hair. Telogen lasts for about 100 days.

The anagen phase. This phase is experiencing a period of growth the hair cells are far more intense, incessant. This phase can last for two to six years. If a shorter growth period is indicative of people who have trouble growing their hair lengthy.

There are two sorts of hair growth disorders that are influenced by the individual himself. Namely hirsutism disorder is a condition that affects mostly women. If the women were too several difficulties or dietary elements that are not very good, it will affect the biology of hair growth. And the second is Hypertrichosis is a condition that causes excessive hair growth in areas of the body, where unusual hair grows there. But these two conditions can be cured.

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