What system does bone marrow appendix spleen and thymus belong to?
The immune system
Which body system includes bone marrow the thymus gland lymphatic vessels lymph nodes and the spleen?
All of these are included in two of the human body systems: The Lymphatic System and the Immune System. Lymphatic System: Lymph nodes Spleen Thymus Bone marrow Lymphatic vessels Lymphoid tissues in the Digestive System (e.g., lymphoid follicles, Peyer's Patch, appendix) aka MALT~Mucosal Associated Lymphoid Tissue aka GALT~Gut Associated Lymphoid Tissue. Tonsils Immune System: Lymph nodes Spleen Thymus Bone marrow Lymphatic vessels Lymphoid tissues in the Digestive System (e.g., lymphoid follicles, Peyer's Patch, appendix) aka…
Red blood cells and white blood cells belong to the circulatory system. White cells are also found in the lymphatic system and are important in the immune response. Red blood cells are also found in the spleen. The spleen breaks down old red blood cells and recycles them and acts as a reservoir for red blood cells when excess bleeding occurs.
The appendix actually forms early on in the development of a fetus where it coats the intestinal area with a sort of protective antibacterial paint. After birth it begins to assist in beneficial bacterial growth and becomes a sort of reboot system harboring the bacteria in the case of a purge. It is also believed the appendix has a role in b-lymphocyte induction, though not as much as in bone marrow.
Much like the appendix, the spleen is not required for life. It is very useful since it holds and filters some of the blood supply and does some other immune system work. You can live without it because it's role is secondary to that of the liver and kidneys. It's like losing your arm as opposed to losing your head.