Lymphoid tissues Flashcards
thin vessel lined by endothelium
lymph vessel
similar to large veins
lymphatic ducts
rich neutral network
tunica adventitia
longitudinal and circular muscle
tunica media
fixed cells predominate
loose lymphoid tissue
free cells predominate
dense lymphoid tissue
found in all lymphoid tissue excepth thymus
nodular lymphoid tissue
lymphocytes and free macrophage
mobile cells
res cells, fix macrophages, plasma cells
fixed cells
2 primary lymphoid organs
bone marrow and thymus
secondary lymphoid organs
tonsil, lymph nodes, balt and malt
highly cellular, viscuous
bone marrow
connective tissue cells of any organ
stroma
consisting mainly of hematopoietic tissue
red marrow (medulla ossium rubra)
consisiting mainly of fat cells
yellow marrow (medulla osium flava)
Red bone marrow produces all red blood cells and platelets and around _________ % of lymphocytes in human adults.
60-70
at birth, what color is a bone marrow?
red