Can bacteria enter the body from intact skin? What is the role of the skin in relation to external b

Basically, there is no such way to enter**, after all, because there is no gap, so to a certain extent, there is no gap that cannot invade the inside of the human body and**As the first line of defense in the human body, it has been able to prevent the invasion of dust and most microorganisms in the air to a great extent, but if the first line of defense is damaged, that is, there is a gap, it also means that there is a gap, so to this extent, Bacteria can break through the first line of defense and enter the human body, because the tunnel defense line only plays an external role, and the second line of defense is some cells in the human body and lymph, etc., if these lines of defense are also broken. After all, the first layer of defense, the second layer of defense, and the third layer of defense have all been out of control one after another, and these lines of defense represent one is the body surface, the other is the body, and if there are problems in the body surface, it can be basically concluded that this person has collapsed to a certain extent.

Of course, in other ways, because to a certain extent, it is impossible for the multiple lines of defense in the body to have problems at the same time. Therefore, once there is a problem, it will actually have a symptom to a certain extent, but this kind of symptom usually needs to be discovered by itself, after all, it is impossible to find it immediately to a certain extent, so when there is a certain problem in the body, that is, there are bacteria or some internal necrotic cells, then it is necessary to find the disease immediately. Therefore, once this situation occurs, it is already possible to predict that the bacteria may cause some signs on the surface or outside the body, so to a certain extent, it will need to be carried out again.

There is a self-examination within the cell, and once there is a problem with the review, it is like white blood cells or red blood cells, which can carry out a certain self-test in the human body, and this immunity can go up and down or change, that is, the body shape appears inside the body.

In other words, through this abnormality, the same or corresponding symptoms can be manifested in the body, and then it can play a certain role in discovery.

No. Germs from the outside world cannot enter the human body through intact **. It is the organ with the largest surface area on the body, enveloping all parts of the body.

**From the outside in, it can be divided into epidermis, dermis and subcutaneous tissue. The epidermis is the outermost layer of the world, which acts as a barrier against the invasion of external bacteria. Once the epidermis is damaged, it is equivalent to a gap in the door, and bacteria will enter the body through the gap.

Under normal circumstances, intact ** can be used as a defense barrier for the human body to prevent external bacteria from entering the human body. However, in some cases, this protective effect will be lost against external bacteria, such as injury, eczema, dermatitis, etc. At this time, the defense against external bacteria will decrease, and bacteria can pass through and enter the human body and cause infection.

Some bacteria can enter the human body through intact **, such as aerosol-borne rickettsia, Bacillus anthracis, etc. But in most cases, liquid substances such as sebum, stratum corneum and sweat on the surface can form a protective film that prevents bacteria from entering the body.

In addition, there are a variety of microorganisms on the surface and pores of normal health, which can coexist with the human body to form an ecological balance and prevent pathogens from invading. These microorganisms also have the potential to trigger infections when factors such as weakened human immunity, environmental changes, and other factors cause this balance to be disrupted.

In general, intact ** is a good state with a certain barrier effect. **The epidermis layer has a stratum corneum, which is able to effectively prevent the invasion of foreign substances and bacteria. However, if there is a wound, abrasion, or rupture of the skin, bacteria may enter the body through the wound.

In addition, there are some beneficial flora (such as lactobacilli) that can compete with pathogenic bacteria for nutrients and space, inhibit the growth of pathogenic bacteria, and play a certain protective role. In addition, there are molecules secreted by sebaceous glands and sweat glands on the surface, and some molecules have a strong bactericidal effect or antibacterial effect.

Therefore, you should usually keep **clean and healthy**, and you can reduce your exposure to external bacteria by washing your hands and bathing frequently, so as to reduce the risk of infection.

What you are talking about is intact**, that is, the sebaceous film and flora, the barrier is intact, basically most of the bacteria can be blocked, but not every bacteria can be blocked, for example, some dry infectious bacteria will destroy the skin flora and barrier, enter the body, cause itching, allergies, redness, acne, inflammation, ** to the external bacteria mainly block, ** acidity and alkalinity also have a bactericidal effect, the flora will also repel foreign bacteria.

**It is the largest immune organ in the human body, with active immune defense, surveillance and self-stabilizing functions. In other words, it can play a strong role in protecting the human body, reducing the physical damage caused by the outside world to the human body, and helping the human body to reduce the damage of acid and alkali chemicals.

In addition, the substances secreted by the sebaceous glands can also protect the moist state of ** from rupture. **It can prevent bacteria, fungi and other microorganisms from contacting the surface of the human body, and the secreted sebum can prevent the growth and reproduction of microorganisms. **It can change the temperature change of the human body by excreting sweat, and can also retain body heat to maintain a stable body temperature.

Therefore, it is a very important organ for the human body.

2. If these 4 abnormalities occur, please check them in time.

Because ** is the outermost organ of the human body, it is easy to have erythema, rashes and so on, sometimes this is the externalization of lesions of other organs of the body, and some are just simple ** diseases, so how should we distinguish between the two? In fact, it is not difficult, if there are these 4 abnormalities, it is likely to be the externalization of lesions in other organs of the body.

Bacteria generally cannot penetrate into intact **, unless there is a broken bleeding area.

The normal and intact human body is a kind of barrier to protect the human body and prevent external bacteria from entering the human body.

Under normal circumstances, bacteria cannot enter the human body through intact **, otherwise you think about it, the human body will not be often infected by bacteria? ** It is very good at insulating bacteria.

And ** is resistant to the outside world, so it can never easily enter our body and cause damage to the body.

No, the surface of the human body itself is a layer of protection, able to resist the invasion of external bacteria, which is written in the ninth grade biology.

For intact ** with strong immunity, this is not able to allow bacteria to invade, it is a function with a certain defense. Usually the invasion of bacteria is caused by the presence of a soft tissue infection. Bacteria act as a barrier to the outside world.

** and mucous membranes constitute the first line of defense to protect the human body They can not only block pathogens from invading the human body, but their secretions also have a bactericidal effect; Some appendages of the mucosa have the effect of blocking and removing foreign bodies, such as lactic acid secreted by sweat glands and gastric acid secreted by gastric mucosa.

It is impossible for bacteria to enter the human body through intact **, but the human body has some aha, abrasions that are difficult for the human eye to see, which is difficult to avoid, so it is really difficult to have that kind of intact **.

**is our first line of defense against bacteria,** is the first line of defense against external bacteria, really the first line of defense,**can filter out a lot of small things for us, bacteria of course** it is not so powerful, it can't fight against brain bacteria, but small details are generally like mosquito bites or something This bacteria can still play a certain protective role, so generally speaking, bacteria will not invade the human body through the normal**, unless** If it is damaged, it will invade, which is why we must disinfect it first after we are injured, just to prevent infection, but now there are many kinds of bacteria, and there is no guarantee that all of them will be the same.

Under normal circumstances, it is not possible to enter the intact **.

It is the first barrier of the human body, it covers the entire body and protects our inner layer, is the most important organ that separates the human body from the environment, between the human body and the external environment, as a barrier to avoid physical, chemical and biological aggression from the environment, and is the first barrier of the human body. It will play a natural self-protective role in the outside world, so that bacteria cannot invade the body at will. But definitely, but when the soft tissue is broken and soft tissue disease occurs, then it will lead to bacterial infection.

It is a barrier to the human body. It has obvious protective and isolation effects on external bacterial and viral infections. Usually pay attention to **or keep **intact to avoid injury and damage, so as not to cause other infections such as bacteria and viruses.

If it is a normal human body, it has a strong blocking and barrier effect on external bacteria. Generally, the bacteria contaminated with ** will not cause any disease problems, but if the ** is damaged or these pathogenic bacteria come into contact with the mucous membrane, infection will occur. **Divided into epidermis and dermis, the outermost epidermis layer belongs to the stratum corneum, the stratum corneum is generally thicker, especially the stratum corneum at the palm toe area, which plays a role in protecting itself from the outside world, of course, it can play a shielding role in the bacteria of the outside world.

**It can act as a barrier for bacteria in the outside world, which can isolate most bacteria, just like a protective film.

Bacteria want to enter the human body from **, and at this time**, ** plays a role in protecting against bacterial invasion**, which can protect the human body from bacterial invasion.

Protection**, natural barrier, but how 9 bacteria will also enter the human body** and other organs.

Barrier effect, and then the secreted oil and sweat also have a bactericidal effect.

It is a protective film that protects the human body from bacteria.

Can act as a protective effect, protecting your body from bacteria.

It is the first barrier of the human body and can effectively prevent the entry of bacteria.

Of course, it's isolation, and it's resistant!

It is the largest organ of the human body, and bacteria need to pass through this barrier if they want to enter the human body: 1. It has a barrier function. **There is a certain elasticity, which can resist the impact and extrusion of external forces.

The structure also has a certain protective effect on the damage of physical effects such as electric current and light. **The surface is weakly acidic, and it also has a certain buffering capacity for acids and alkalis. The dense structure of the epidermis also protects against biological damage.

In addition, the stratum corneum has the property of a semi-permeable membrane, which prevents the loss of nutrients and electrolytes in the body. 2. ** It can absorb substances through the stratum corneum, hair follicle sebaceous glands and sweat ducts, and has an absorption function. 3. You can feel cold, warm, pain, itching, touch and other sensations.

4. Apocrine glands, apocrine glands, sebaceous glands and other appendages all have the functions of secretion and excretion. 5. ** It can transmit the information of ambient temperature to the center through thermoreceptors, and can be used as an effector of body temperature to regulate body temperature. 6. Participate in the metabolism of sugar, protein, lipids, water and electrolytes and melanin.

7. **It also has important immune functions.

** It is to protect the human body from the invasion of bacteria.

You get to the role of the cable Pinghu packaging.

Bacteria want to enter the body from **.

and mucous membranes are the first line of defense of the body's immune system.

**Consists of two layers: epidermis and dermis. The epidermal layer is responsible for blocking the invasion of bacteria and viruses. The dermis has macrophages and lymphocytes, which can kill out a small number of bacteria and viruses.

In general, we rely mainly on the epidermis to defend against bacteria and viruses. As long as there is no bleeding level of ** damage, we don't have to worry about bacteria and viruses invading the body through **.

Normal people's ** has a strong blocking and barrier effect on external bacteria, and the bacteria on the blue will not cause any disease problems, but if the ** is damaged, or these pathogenic bacteria come into contact with the mucous membrane, infection will occur.

Generally, bacteria want to enter the human body from the first few layers, and the first layer will play a protective and inhibitive role, but when injured, bacteria are easy to infect germs through the wound, so clean the wound in time and do not let the wound become infected.

Hindering effect, the surface tissue of ** is very compact, and bacteria cannot enter if there is no wound, and sweat has a certain bactericidal effect.

Bacteria want to enter the human body from **, and at this time** plays a basic defense role against bacteria.

Immunity, intact ** and mucous membranes are the first layer of defense of the human body.