contributes to morphology of composed primarily of lymphocyte red pulp of spleen The parenchymatous tissue network of the spleen that consists of loose plates or cords (sinuses) infiltrated with red blood cells where most of the blood filtration occurs and degenerate erythrocytes are removed from the circulation. UBERON:0001250 splenic red pulp spleen red pulp Wikipedia:Red_pulp EMAPA:35806 SCTID:27579002 CALOHA:TS-1263 FMA:15844 NCIT:C12992 MA:0000756 red pulp spleen spleen pulp