lymphoreticular system Flashcards
name the primary lympoid organs
thymus
bone marrow
name the secondary lymphoid tissue
spleen
lymph nodes
tonsils
what are tertiary lymphoid tissue
abnormal areas at the site of chronic inflammation
what occurs in the thymus
T cell development
what are the lobes of the thymus
medulla
cortex
what is the function of lymph nodes
filter substances throughout the body to search for foreign antigen presence
what are the regions of the lymph node
cortex
paracortex
medulla
where are B cells kept
lymph node follicles
where are T cells kept
lymph node paracortex
how do lymphocytes enter from the blood
afferent lymphatic vessles
how to lymphocytes leave the lymph nodes
efferent lymphatic vessles
describe lymphatic vessles
thin walled for permeability
valves to prevent backflow
what is the Cisterna Chyli
recieves lymphatic drainage
name the tissues found in the tonsils and other exposed areas
mucosal associated lymphoid tissue
how is the spleen attached to the stomach
gastrosplenic ligaments
how is the spleen vascularised
splenic artery and. vein
what are the function of the spleen
blood storage and filtration
lymphocyte production
destroy old erythrocytes
how does the spleen contract to expell blood
muscular capsule surrounding
what divides the thymus into lobules
trabecula
what is the function of the blood thymus barrier
protect T cells from antigens in the blood
what is the function of the thymus cortex
T cell development
what is the function of Thymus Medulla
storage of mature T cells
