What are the organs of the immune system? | An Exclusive Guide 2022

Organs of immune system

In this article, Daily Human Care is going to talk about the organs of the immune system.

Our immune system consists of cells and proteins, as well as whole organs and organ systems. The skin’s and mucus membranes and the lymphatic system’s glands are included in the immune system.

What is the function of organs of the immune system?

The immune system has an important role to play. It protects the body against infectious chemicals, germs, and changes in the cells, which can make you sick. It consists of different bodies, cells, and proteins

Cells and Organs of the Immune System

The immune system contains a primary lymphoid organ, secondary lymphoid organ, and various immune cells.

  • Thyme-bone marrow and secondary lymphatic tissues, including spleen, tonsils, lymphatic vessels, lymph-knots, adenoids, skin, and liver, are the main lymphoid organ of the immune system.
  • The white blood cells are the second arm of the innate immune system and are functioning as autonomous single-cell species.
  • The inherent leukocytes include phagocytes, mast cells, eosinophils, base cells, and normal kill cells (macrophages, neutrophils, and dendritic cells). These cells recognize and destroy pathogens and are also significant mediators for adaptive immune system activation.
  • Specific leukocyte cells are called lymphocytes in the adaptive immune system. B and T cells are the primary lymphocyte types and come from the hematopoietic bone marrow stem cells.
  • The lymph system includes a network of lymph canals called lymphatic vessels and is part of the circulatory system. The lymphatic system has many roles, such as bringing white blood cells into the bones from and to the lymph nodes.

What are the five organs of the immune system?

The essential components of the immune system include:

  • White cells,
  • Antibodies,
  • Lymphatic system,
  • Complement system,
  • Spleen,
  • Thymus, and
  • Bone marrow

These are the components of your immune system that resist infection aggressively.

How do the organs work together in the immune system?

The immune system is like a police force continuously patrolling all the tissues and organs of the body. The system works closely with the transport requires circulatory system and lymphatic systems for lymphocyte development.

What are the signs of weak organs of the immune system?

6 Signs You have the Immune System Compromised

  • Your tension is up in the sky
  • You have cold always
  • You have many tummy troubles
  • You are reluctant to heal your wounds
  • They are usually infected
  • All the time you feel fatigued

Organs of the immune system that function as barriers

The first line of defense against external genes is your skin and mucous membranes. With help from the following, they serve as a physical barrier:

  • From the very beginning, antibacterial agents will destroy germs. The respirator, tear fluid, and a specific enzyme contained in saliva breaks the bacterial cell walls.
  • The mucus in bronchial tissues helps to trap several germs in which we breathe so that hair-like structures called cilia can move them out of the airways.
  • Most germs join the body in the food we consume to avoid stomach acid.
  • Harmless skin bacteria are also active in the immune system and mucous membranes in our body.
  • Moreover, the reflection that makes us cough and sneeze helps free our respiratory system from germs.

Also, read  the best juices that boost the immune system

Organs of immune system

What are the major organs of the immune system?

The organs of the immune system are;

Lymphoid organs

The lymph system consists of the following:

  • Primary Lymphoid organs: the bone marrow and the thymus are included in these bodies. They contain special cells called lymphocytes of the immune system.
  • Secondary Lymphoid organs: the lymph nodes, spleen, tonsils, and specific tissues of various layers of the body’s mucous membranes (for example, bowels). The cells of the immune system do their fundamental role in battling germs and foreign materials in these organs.

Bone marrow

The spongy tissue inside the bones is the bone marrow. This is where most cells in the immune system are created and amplified. The cells pass through the blood to other bodies and tissues. Many bones contain a red marrow at birth, which actively produces cells of the immune system. Throughout our lives, the red bone marrow becomes increasingly fatty tissue. Only several of our bones, including ribs, breastbones, and pelvic, also have red bone marrow in adulthood.


The thymus is above the heart behind the breastbone. Only in children does this gland-like organ come to full maturity, and slowly becomes fatty tissue. Thymus cells grow in particular forms of cells called thymus cell lymphocytes (T cells). These cells organize the innate and adaptive immune system processes, among other functions. T cells traverse the body and track all cell surfaces for changes frequently.

Lymph nodes

Lymph nodes are tiny tissues of beans located in the lymph vessels. Filters are the lymph nodes. Different cells of the immune system trap germs throughout the lymph nodes, thus causing unique blood antibodies. Swollen or sore lymph nodes are a sign of an active immune system to combat infection, for example.


The spleen is situated under the diaphragm in the upper left abdomen and has various forms of work to perform:

It stores different cells of the immune system. If required, they pass to other organs via the blood. In the spleen, the cells of scavengers (phagocytes) serve as a filter to the bloodstream of germs.

Red blood cells (erythrocytes) are broken down.

It stores and breaks down platelets (thrombocytes) that are, among other things responsible for blood coagulation.

The spleen tissue has always been circulating with a lot of blood. The tissue is really elastic at the same time. The spleen can break easily in case of serious injury, e.g. in an accident. Operation is then typically required, as there is a chance of bleeding to death otherwise. If the spleen must be entirely removed, other organs of the immune system will perform their roles.


The tonsils also belong to the immune system. They will avoid germs entering the body through the mouth or nose due to their place in the throat and palate. The tonsils often contain a large number of white blood cells that destroy germs.

Palatine tonsils, adenoids, and lingual tonsils are required for all types of tonsils. The rings around the opening to the throat of the mouth and nose are called, often, Waldeyer’s ring together.

Lymphatic tissue is also present on the side of the throat, so the palatine tonsils can perform functions if taken.

Mucous membranes

The bowel plays a central part in body protection from germs: more than half of all body cells, particularly in the last part of the small bowel and in the appendix, which produces anticoagulants are contained in the bowels. These cells detect and mark and kill foreign substances. It also saves details on substances so that the next time you respond faster. There are also harmless bacteria in the large intestine called gastrointestinal or intestinal flora.

Healthy intestinal flora makes spreading and entry into the body difficult. Many of the mucus membranes, as in the respiratory and urinary tract and the vagina, also support the immune system in other parts of the body. The cells of the immune system are right under the mutant membranes and avoid attachment of bacteria and viruses.

Also read, foods to have during Pandemic

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