BIOL 171 Lecture Notes - Lecture 27: Splenic Injury, Red Pulp, Mononuclear Phagocyte System
Document Summary
Inferior to diaphragm, posterolateral to stomach, left kidney, and tail of pancreas is medial: spleen is intraperitoneal, left kidney is medial and posterior, spleen is the largest reticuloendothelial tissue. Not essential to life, but important in fetus: reticulo = area that catches anything poisonous to the body with white blood cells. Clears blood from dead cells: endothelial = cells/tissues. Cells forming the system: reticuloendothelial = they are catching any viruses or bacteria! Example: lymph nodes, tonsils, etc: white pulp catches antibodies, red pulp catches dead cells (red cells, white cells, platelets)! Joined at hilum: they are superomedial and ______. Splenic circulation: sa divides into 6 branches in spleen, sv exits hilum and runs posterior and inferior to the pancreas. Lymph nodes: two types: visceral & vascular, vascular close to blood vessel, visceral close to visceral. Immunity (infectious: production of lymphocytes and plasma cells, white pulp, filter blood (hematopoietic, destruction of aging blood cells and phagocytosis of abnormal erythrocytes.
