1 The spleen is the largest organ of the lymphatic system. 2  Its primary function is to filter blood of damaged cells, cellular debris, and pathogens. 3  Like the thymus, the spleen houses and aids in the maturation of lymphocytes. 4  Lymphocytes destroy pathogens and dead cells in the blood.he lymphatic system plays a vital role in the proper functioning of the body. One of the major roles of this organ system is to drain excess fluid surrounding tissues and organs and return it to the blood. Returning lymph to the blood helps to maintain normal blood volume and pressure.
More Americans believe aliens have visited Earth than believe that Jesus is the Son of God. According to a National Geographic survey, 77 percent of all Americans believe there are signs that aliens have visited Earth, and according to a recent Harris poll only 68 percent of all...
However, demographers have come up with ways to estimate the size of the illegal alien population. The Department of Homeland Security estimated that 11.4 million illegal aliens were living in the United States in 2012 (DHS, March 2013). Pew Research Center estimated that the illegal alien population in 2014 was 11.3 million (Pew, July 2015). Read more about Illegal Alien Population in the U.S. (2015) A definitive count of the number of illegal aliens living in the United States is difficult to obtain. For obvious reasons, those who are in the country illegally are reluctant to come forward to be identified and counted.