Paedagogica Index. 1  You don't just read about Seneca or Caesar; you read the words of Seneca and Caesar themselves. You don't just speak your own modern language unreflectively, but you learn where much of it came from, after actually seeing the contents and the workings of one of its greatest sources.
The spleen will save any useful components from the old blood cells, including iron, so they can be reused in new cells. The spleen can increase in size in order to store blood. The organ can widen or narrow, depending on the bodyâs needs. At its largest, the spleen can hold up to a cup of reserve blood. Spleen problems
It is positioned in the left upper abdomen, and is the largest organ of the lymphatic system. The spleen serves a critical role in immune function because it purifies the blood and helps the immune system to recognize and attack foreign pathogens and allergens. The spleen is composed of the red pulp and white pulp. The white pulp produces and grows immune cells as well as blood cells. On the other hand, the red pulp is responsible for purifying the blood and removing dead or old blood cells.