Wisdom teeth, or third molars, may come into the mouth as early as 16 years of age but usually they come in several years later. This question is prompted by hearing stories about wisdom tooth problems. These problems are often due to inadequate space in the back of the mouth for these teeth to grow in.
The spleen plays important roles in regard to red blood cells (also referred to as erythrocytes) and the immune system. It removes old red blood cells and holds a reserve of blood, which can be valuable in case of hemorrhagic shock, and also recycles iron. In humans, up to a cup (236.5 ml) of red blood cells can be held in the spleen and released in cases of hypovolemia. 2  It can store platelets in case of an emergency and also clears old platelets from the circulation.
Â© 2014 WebMD, LLC. All rights reserved. Prev Next Front View of the Spleen. The spleen is an organ in the upper far left part of the abdomen, to the left of the stomach. The spleen varies in size and shape between people, but itâs commonly fist-shaped, purple, and about 4 inches long. Because the spleen is protected by the rib cage, you canât easily feel it unless itâs abnormally enlarged. The spleen plays multiple supporting roles in the body. It acts as a filter for blood as part of the immune system.