Cell and tissues of immune system

Immune system is a huge community of organs, white blood cells, proteins (antibodies) and chemicals. The immune system works collectively to shield you from overseas invaders.

Today my topic of explanation is the introduction to the immune system.

I am going to cover the topics

1 what is the immunity

2What is immune system?

3 what is symbiology and

4 the role of immune system

5 different system in our body and the cells and tissues in our immune system

6 What are the four immune system

First, we see

What are the four immune system?

The major components of the immune system are: white blood cells, antibodies, the supplement system, the lymphatic system, the spleen, the thymus, and the bone marrow. These are the components of your immune system that actively combat infection.

What is immunity?

Immunity can be defined as resistant to diseases especially for infectious diseases.

What is immune system?

Immune system is the collection of tissues and cells or molecules that mediate resistance to infections and a coordinated reaction of these cells and molecules to infectious microbes comprises an immune response.

 

What is immunology?

When it comes to immunology it is the study of the immune system including its responses to microbial pathogens and damaged tissues and also its role in diseases. the most important function of the immune system is to prevent or eradicate infections. Introduction to immune system

Role of immune system

Our immune system plays lots of important roles in tumor defending defense against infections and recognizes and responds to tissue grafts and newly introduced proteins.

The importance of this immune system for health is dramatically illustrated by the frequent observations that individuals with defective immune responses are successfully into different infections it's found that stimulating immune responses against pathogens via vaccination is the most effective method to prevent individuals from infections. Introduction to immune system

When we talk about immunology antigen and allergy like terms are highly abundant so before enter to the defense system in our body. we'll have a look about

 

What is antigen?

Simply antigen is a foreign substance capable of triggering an immune response in an organism

What is allergy?

While allergy is a misguided reaction by the immune system to harmless foreign substances when it comes to the defense system in our body it is mainly grouped under innate immunity and adaptive immunity.

Cell and tissues of immune system

What is innate immunity?

Which is also present in healthy individuals provides immediate protection against microbial invasion because of that reason this immunity also known as early defense or moreover this immunity is known as natural naïve immunity which enhances adaptive immunity responses. Introduction to immune system

What is adaptive immunity?

It also known as acquired immunity or specific immunity which develops more slowly and provides more specialized defense against infections this immunity required expansion and differentiation of lymphocytes in response to microbes before it can provide effective defense that means it adapts to the presence of microbial invaders.  this adaptive immunity are two types as humoral immunity and cell-mediated immunity

when we talk about

•  Humoral immunity

It is mainly mediated by antibodies produced by b lymphocytes b lymphocytes separated antibodies right secreted antibodies enter to the circulation and neutralize the microbes so antigens present outside horse sex.

•  Cell mediated immunity

In cell mediated immunity it is mainly mediated by the lymphocyte cells t cells recognize antigens display by the antigen present in cells like dendritic cells macrophages like things and destroy them via different mechanisms.

when we talk about

What is active and passive immunity?

·      Active immunity.

 

we can say like that this way right immunity of an individual can be induced by two different ways known them as active immunity and passive immunity if the immunity of an individual induced by injection or vaccination it is the active immunity. this induction develops resistant to later infection by the same pathogen

·        Passive immunity

But in passive immunity it is somewhat different from active one because in passive immunity individuals receives antibodies or cells from another individual already immune to an infection. This immunity would not result in long-time period resistance to the contamination like lively immunity so this immunity is transient in our immune system.

Cell and tissues of immune system

Cell of the immune system

There are different types of cells present in our body and they have wide variety of frost in hostiles. There is 

lymphocyte like b lymphocytes

and t lymphocytes 

which are specific In antigen recognition specifically b lymphocytes are the mediators of humoral immunity while t lymphocytes act as mediators of cell mediated immunity other than lymphocytes there are antigen present in cells like dendritic cells macrophages b cells follicle and dendritic cells in our immune system which are engaged in capturing antigens for displaying for lymphocytes in here dendritic cells initiate t cell responses macrophages related to the effective phase of cell mediated immunity and follicular dendritic cells display antigens to be lymphocytes in humoral immunity system. Introduction to immune system

There are also effector cells like tail lymphocytes macrophages granulocytes present in our body they are also responsible for the elimination of fantasies mainly the lymphocytes activate phagocytes and killing infectious disease infected cells. Macrophages phagocyte and killing microbes and granulocytes also kill microbes like that way.

Tissues of immune system

tissues of our immune system consist of generative lymphatic inflamed organs. in which tnb lymphocytes nature and become competent to respond to antigens while peripheral lymphoid organs initiate immune response to microbes as an example, generative lymphoid organs like bone marrow and thymus are present inside our body while spleen lymph node like peripheral lymphoid organs are present in our immune system. Introduction to immune system

so, these are the points which I needed to cover by this article, I hope you have learned something new from this article.