Spleen - size, structure and shape, topographic anatomy, Function, Blood vessels, Nerves, and innervation Spleen. The size of the spleen. The structure of the spleen. Spleen shape The spleen, lien (Greek splen), is a richly vascularized lymphoid organ. In the spleen, the circulatory system is closely related to the lymphoid tissue, due to which the blood here is enriched with a fresh supply of leukocytes developing in the spleen. In addition, the blood passing through the spleen is released due to the phagocytic activity of spleen macrophages from obsolete red blood cells ("graveyard" of erythrocytes) and from pathogenic microbes, suspended foreign particles that have entered the bloodstream, etc. The size of the spleen, due to the richness of the vessels, can vary quite significantly in the same individual, depending on the greater or lesser filling of the vessels with blood. On average, the spleen is 12 cm long, 8 cm wide, 3-4 cm thick, and weighs about 170 g (100-200 g). D...
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