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Function. The spleen plays an important role in your immune system response. When it detects bacteria, viruses, or other germs in your blood, it produces white blood cells, called...
The spleen is a small organ inside your left rib cage, just above the stomach. It’s part of the lymphatic system (which is part of the immune system). The spleen stores and filters blood and makes white blood cells that protect you from infection.
The spleen is an organ found in almost all vertebrates. Similar in structure to a large lymph node, it acts primarily as a blood filter. The word spleen comes from Ancient Greek σπλήν (splḗn). [1] The spleen plays very important roles in regard to red blood cells (erythrocytes) and the immune system. [2]
The spleen filters the blood, removing old or unwanted cells and platelets. As blood flows into the spleen, it detects any red blood cells that are old or damaged.
Learn about the spleen, the largest organ of the lymphatic system, and its role in blood filtration, immune function, and red blood cell recycling. Find out about common conditions affecting the spleen, such as rupture, enlargement, and removal.
Learn about the spleen, the largest organ of the lymphatic system, located in the left upper quadrant of the abdomen. See its structure, blood vessels, lymphatic drainage, innervation and functions, such as immune surveillance and red blood cell recycling.
Function. In utero, the spleen is partially responsible for hemoglobin synthesis from the 10th through the 25th week of pregnancy. After birth, the primary function of the spleen shifts to the following major roles:
The spleen has a covering of fibrous tissue (the splenic capsule) that supports its blood vessels and lymphatic vessels. The spleen is made up of two basic types of tissue, each with different functions: White pulp. Red pulp. The white pulp is part of the infection-fighting system (immune system).
By structure and function, the spleen is essentially 2 organs: The white pulp, consisting of periarterial lymphatic sheaths and germinal centers, acts as an immune organ. The red pulp, consisting of macrophages and granulocytes lining vascular spaces (the cords and sinusoids), acts as a phagocytic organ.
Learn about the spleen, a small organ in the lymphatic system that helps fight infection, filter blood, and regulate blood volume. Find out where the spleen is located, what it does, and how it can be removed or damaged.