LYMPH EXAM GRADE A+ ANSWERS

the body. They function as a cleanser of lymph as wells as a site of T and B cell activation Afferant Lymph Vessels Answer- Lymph node Entering vessels Efferent lymph vessels Answer- carry lymph away from lymph nodes hilum of lymph node Answer- A shallow indentation where blood vessels and nerves reach the lymph node trabeculae of lymph node Answer- Extensions of the capsule creates division of the lymph node Germinal center of lymph node Answer- - Central region of follicle - Contains dividing lymphocytes medullary sinus Answer- The medullary sinuses (or sinusoids) are vessel-like spaces that separate the medullary cords. The medullary sinuses receive lymph from the trabecular sinuses and cortical sinuses and contain reticular cells and histocytes. The medullary sinus drains the lymph into the efferent lymphatic vessels. Contain b cells and epi reticular cells capsule of lymph node Answer- dense fibrous that surround each lymph node subscapular space Answer- contains macrophages and dendritic cells (involved in initiation of an immune response), The subcapsular sinus is present beneath the capsule and is traversed by both reticular fibers and cells. It receives the afferent vessels, continues with the trabecular sinuses, and joins the medullary sinus in the medulla of the lymph node. outer cortex of lymph node Answer- contains b cells, macrophages, and dendritic cells Paracortex of lymph node Answer- -Houses T cells and dendritic cells. Region of cortex between follicles and medulla. Contains high endothelial venules through which T and B cells enter from blood. Not well developed in patients with DiGeorge syndrome. -Paracortex enlarges in an extreme cellular immune response (e.g., viral infection).