Because the components of the immune system are part of the other systems. The WBCs are part of the cardiovascular system; the production of WBCs is part of the skeletal system, etc.
spleen
tonsil is the part of immune system.it is a secondary lymphoid organ. it is formed by the aggregation of lymphoid follicles.
the immune system
Yes, it is possible for an organ to function in more than one system. Some organs can be a part of the cardiovascular system while also being a part of the immune system.
what organs make up the immune system
no its not.
No it is not part of the immune system
Bone marrow is part of the body's skeletal and lymphatic organ systems. It produces lymphocytes vital to the immune system.
Immune System.
The lymphatic / immune system and the endocrine system.
No, the immune system is not an organ. It is a system in your body that fights of viruses that enter your body. And example of an organ is a heart, or liver. The immune system are cells that fight off viruses that can make you sick.