After a person is injured, why does the wound heal automatically?

After a person is injured, why does the wound heal automatically?

The bottom layer of human skin is called basal cell, which is the stem cell of skin. After epidermal injury, local inflammatory mediators will stimulate the proliferation of these cells and repair the wound.

Many cells in the human body can divide, such as liver, bone marrow, gastrointestinal tract and so on.

a

Wound healing is repaired by the proliferation of granulation tissue, which consists of new capillaries and fibrous connective tissue. Granulation tissue has the function of protecting wound, preventing infection and repairing incision, so the wound healing of human body is not repaired by self-repairing ability and cell regeneration.

Itching after injury is caused by the proliferation of histiocytes after scar formation. Red, purple, deteriorated and prominent skin surface will appear locally. Generally, the scar hyperplasia period will gradually stop in about three months, and the scar will gradually flatten and soften. If you don't recover well, it will take more than a year, so you should pay attention to maintenance at ordinary times.

b

Wounds don't like to heal after trauma,

1. First of all, we must rule out the cause of diabetes, which will lead to skin window non-healing. You can do fasting blood sugar exclusion.

2. Secondly, local infection should be excluded. Local active dressing change treatment. The reference for guiding treatment is as follows: washing with hydrogen peroxide and washing with normal saline. Disinfect the wound with iodophor, apply sterile gauze externally, and change the medicine once every three days.

c

At the same time, we also need some other nutrients to promote growth, such as vitamin C and B vitamins. The overall intake of vitamins is better. Vitamins mainly exist in various plant foods, and there are more fat-soluble vitamins in meat. Therefore, we can supplement protein with eggs, milk or bean products for breakfast, mix meat and vegetables for lunch, take vitamins and protein in a balanced way, and be vegetarian for dinner to ensure that there is enough dietary fiber in the intestine at night, promote gastrointestinal peristalsis and increase absorption. Snacks are mainly fruits.