HAIR Anatomy, Structure, Function: Composition of Hair Follicle

The structure of the hair , namely its internal part - the hair follicle in its structure is very similar to a house plant in flowerpots.Take into consideration a small part of the scalp in the section. The composition of the hair and the structure of the scalp:
  • The scalp layer of the scalp
  • The hair shaft
  • Involuntary muscle
  • Sebaceous gland
  • Fatty tissue - fatty interlayers
  • Hair follicle
  • The hair follicle is the root of the hair
  • Veins and arteries - a network of blood vessels and microcapillaries.
We will examine each of the main components of the hair separately. The hair follicle is the "invagination" of the skin - it is such a "pouch" that covers the hair along its stem. By analogy with plants it is a pot of earth. At the bottom of the hair follicle is a hair follicle - this is the root of the hair, from which the hair grows.
HAIR Anatomy, Structure, Function
The hair shaft - the hair habitual to us - is like a stem in a plant, the root of which in our case is a bulb planted in a pot (follicle of hair).

The veins and arteries that make up the hair are a complex network of capillaries, through which blood flows to the bulb of the hair, feeding it with the necessary vitamins and minerals.

The sebaceous gland secretes (produces), the secret is sebum. The sebum is evenly distributed along the hair shaft. Skin fat, evenly distributed over the scalp, performs a utilitarian function to protect the scalp from harmful substances from the outside.

Growth of hair passes on the advanced stages. These stages are called the phase of the life cycle of the hair, but we'll talk about this in another section.

Structure and Composition of the Hair Follicle

The hair follicle is a unique mini organ that plays an important role in the process of hair growth . By analogy with domestic plants it is a pot of earth. 

From the fact that this "pot" is whole and wide, the development of the bulb (root) and the growth of the hair (stem) will follow. In the hair follicle (in the upper part of the follicle of the hair), the ducts of the sebaceous gland (figure 2 see the figure), which smear their hair (figure 1 see the figure), give it elasticity, flexibility and shine.
Structure and Composition of the Hair Follicle
Another function of the sebaceous gland is to protect the external surface of the scalp from the penetration of harmful substances from the outside.

The outer side of the hair follicle is connected with the so-called involuntary muscle. This muscle is capable of "straightening and simultaneously compressing the hair follicle." What usually happens in the case of stress, then they say "hair stood on end".

Depending on the location of the hair follicle in relation to the scalp, the shape of the hair depends .

Appearance and health of hair directly depend on the work of the sebaceous glands, the activity of which is directly related to the health of the hair follicle.

The health of the follicle, in turn, is associated with the overall health of the person and often the disease of the follicle is a consequence of the already launched disease.

Diseases of the Hair Follicle

Hair follicles, like any other organ in our body, can also get sick.
Diseases of hair follicles are conditionally divided into three stages:
  • Thinning of hair follicles - the initial stage of the disease of the hair follicle.
  • Atrophied hair follicles are follicles that produce rare and thin hair.
  • Sleeping hair follicles - these follicles will never be able to produce hair.
We will separate each of the stages separately.

Thinning Hair Follicles

Hair follicle cancellation - such a disease occurs as a rule in two cases - due to stress or due to its sensitivity to hormones. In case of stress, the involuntary muscle (see the figure) shrinks, and thus squeezes the hair follicle, in such cases the hair usually stands upright.

The most dangerous thing that can be with such a muscle spasm is the damage to the hair follicle (located inside the follicle) from the strong squeezing of the hair follicle. Muscle spasm with time passes, the follicle returns to its former volume, only, alas, the hair follicle is already deformed. Consequently, it will not be able to stay in the follicle, as a result - the hair falls out.

Treatment of the follicle after stress involves the use of vitamins to restore hair follicles, the preparation of hair masks. In especially severe cases, if hair loss does not stop for a long period, then apply local ozone therapy and mesotherapy.

The follicle can be thinned and as a result of its high sensitivity to the hormone dihydrotestosterone. Since under the influence of this hormone, in the hair follicles sensitive to it, pathological processes begin to develop. The follicle "shrinks" as it were, becoming smaller and thinner. Consequently, the hair follicle can not develop to normal length and thickness. As a result, the hair grows thinner, not at full length. This hair, usually not pigmented (colorless), weak, quickly falls out.

Treatment of the folicle at this stage of the disease, in the case of the influence of the hormone dihydrostosterone, is quite successful. Since serious atrophy has not yet occurred. The treatment methods for this disease are described in the treatment of baldness . The main thing is not to allow before the atrophy of the follicle.

Atrophied Hair Follicles

Atrophied hair follicle - the disease occurs as a consequence of an untreated thinned follicle. If you look at the hair follicle in a cut, at this stage it looks "compressed" and significantly reduced in volume, perhaps even 2-3 times.

The consequence of the work of such a follicle is thin hair, in men at this stage of the disease, the hair grows as a rule already individually, have a "hook-like appearance", they are small in some cases almost "cannon", colorless.

Treatment of atrophied follicles implies a whole complex of measures aimed at stopping the pathological process of further withering of the follicle and at the maximum possible restoration of the vital activity of such follicles. Treatment at this stage, unfortunately, does not always give a 100% result, it depends on the neglect of the problem, individual characteristics and other factors.

Sleeping Hair Follicles

Sleeping follicles of hair - the final stage of the disease of the hair follicle. If in the first two stages of the disease the problem was not paid due attention to the follicle, what happens sooner or later in any serious disease is death. The hair follicle, as such, does not disappear completely, it is visible by microscopic examination of the scalp, but the hair does not already produce such a follicle. In places where the sleeping follicles are concentrated nothing grows, on this place appears "bald".

To date, "no one in the world is capable of" waking up sleeping follicles "! If the disease is started before such a stage, as a rule, wigs and hairpieces are recommended, or hair transplantation is performed .

Of course, it is necessary to have a huge internal willpower or complete indifference to oneself to admit the disease to such a stage. Remember, even a slight hair loss should already be a signal to you.

Do not pull, this will determine the amount of hair on your head for the rest of your life. If you have even a slight hair loss , immediately get a trichologist consultation .

Greasy Gland

The sebaceous gland (figure 2 see the figure) is an integral part of the hair follicle and scalp. The main function of the sebaceous gland is the secretion of a specific secretion - sebum .

Being evenly distributed over the entire length of the hair (figure 1 see the figure), the secret of the sebaceous gland gives the hair a shine and a rich color. However, sebum performs a utilitarian function to protect the surface of the scalp (scalp) from harmful substances from the outside, from microbes and infections.

The secret of the sebaceous gland is excreted in abundant areas with strong emotional stress. In this case, the sebaceous gland squeezes the follicle of the hair (see the figure), thus compressing the sialasal gland burdened on the one hand by a strained muscle, on the other hand, by the outer wall of the follicle.

At this stage, there may be problems associated with excessive sebum secretion or with its almost complete absence.

Depending on the activity of the sebaceous gland function , the type of hair depends . There are 4 main types of hair:
  • Greasy hair - when hyper production of sebum predominates.
  • Normal hair is the case when the sebaceous gland functions normally.
  • Dry hair - when the sebaceous gland does not function fully or in insufficient quantity emits sebum to effectively "lubricate" the hair and scalp.
  • Mixed type of hair - people who wear long hair are usually ranked here, when all the hair is not lubricated along the entire length with sebum, it remains fat at the roots and dry at the tips.
Not normal is the development of sebum and its inadequate release.

Excessive Sebum Secretion

Excessive secretion of sebum, can occur not only in the aftereffects of stress, but also as a result of hair loss and subsequent hair thinning.

The hair on our head is not just an ornament, although most people, mostly representatives of the pre-carp sex, use them for this purpose. Like the secretive gland, evenly distributed over the surface of the scalp, the hair on the head also performs a utilitarian function. Thus, the surface of the head is protected by hair, and a thin fatty layer distributed over the surface of the scalp-the sebaceous gland secretion.

Why is there an excessive secretion of sebum in hair loss ?

An interesting moment is passing by. The fact is that with hair loss, one of our "external protections" of the scalp, disappears, literally speaking - drops out. And sebaceous gland, takes on the function of "additional protection" of the scalp - begins to secrete several times more secret to compensate for the lack of hair with a thicker fat layer.

In this case, often, there is an aesthetically unattractive effect when the hair on the head is already scarce, while they are still fatty, as it were, "sticking to the scalp." Then govrjat, that "the head quickly gets dirty" and it should be washed once a day though earlier it was necessary to wash once a week.

Treatment of such a deviation in the operation of the general gland with hair loss, includes a number of measures: to increase the volume of hair, treatment of alopecia as such pathological process, after qualitative hair treatment, regulation of sebaceous glands function.

In the rays, if the abundant sebum secretion is caused by stress, along with the recovery of the onion bulbs, therapy is used to normalize the work of the sebaceous gland.

Decreased Sebum Secretion. Dry, lifeless Hair

Another deviation in the work of the sebaceous gland is a reduction in the secretion of sebum. In this case, as a rule, notice the dryness and lifelessness of the hair. They say, "hair like straw," "like a patch," constantly "sticking out in different directions."

As in the case of excessive sebum secretion, a decrease in secreted secretion may also be caused by stress or chronic stress. When the involuntary muscle is already so atrophied that it is not able to squeeze the sebaceous gland. In this case, the head massage, the treatment of low-power electric currents is shown.

Reducing the secretion of the secretion of the sebaceous gland may appear in cases of occlusion of the mouth of the hair follicle, then the secretion of the sebaceous gland is not able to fully cover the scalp. Then, they say - "fat hair at the roots and dry at the tips."

If you have a suspicion of a violation of the sebaceous gland, you know, this is a possible consequence of some pathological process.