Wednesday, June 20, 2018

spleen -

The spleen is a ductless gland that is closely related to the circulatory system and serves as a destroyer of dark red blood cells. The spleen includes one organ of the lymphoid system, in addition to the thymus, tonsils and lymph nodes.

Lymphoid system serves to protect the body from damage caused by foreign substances. The cells in this system are known as immunocompetent cells that are cells that are able to distinguish body cells with foreign substances and organize inactivation or destruction of foreign objects. Immunocompetent cells consist of:

  • the main cell moves, the lymphocyte and macrophage cells, and
  • the primary cells are settled, the reticuloendothelial and plasma cells.