Human immune system

In addition to being a machine, the human body is more like a castle. The castle has its guards, and the body itself also has its own defense system, which is the human immune system, which is the reason for what we often call high or low immunity. However, many people do not understand the relevant knowledge about the human immune system, let alone how to protect the human immune system.

So what exactly does the human immune system do? What are the common functions of the human immune system? What parts does the human immune system consist of? Although you are not a medical professional, you should still know this common sense. Then the following is a detailed introduction.

The immune system is an important system for the body to execute immune responses and immune functions. It is composed of immune organs, immune tissues, immune cells and immune molecules. It is the most effective weapon to defend against the invasion of pathogens. It can detect and eliminate foreign matter, foreign pathogenic microorganisms and other factors that cause fluctuations in the internal environment.

However, the hyperfunction of its function may cause damage to its own organs or tissues. 1. Identify and eliminate foreign invading antigens, such as pathogenic microorganisms. This function of preventing the invasion of external pathogens and eliminating invaded pathogens and other harmful substances is called immune defense.

2. Identify and eliminate mutated tumor cells, senescent cells, dead cells or other harmful components in the body. This function of detecting and eliminating "non-self" components in the body at any time is called immune surveillance.

3. Maintain the stability of the internal environment of the immune system through autoimmune tolerance and immune regulation.

From the above introduction, we can understand that the human immune system is the system that performs immune functions in the human body. It is composed of four parts and can remove foreign matter and waste from the body. Knowing this knowledge will help you not look confused when you hear these terms when seeing a doctor or having a physical examination, so this understanding is still necessary.