4: Immune Organs Cont. Flashcards
What kind of membrane do lymphatics have?
discontinuous basement membrane
T/F: Lymphatics contain RBCs
F
Where does lymph enter the bloodstream?
thoracic duct
Lymphadenopathy
enlarged lymph node
What cells are mostly in the outer cortex?
B cells
What cells are mostly in the paracortex?
T cells
High endothelial venule
entry point for circulating lymphocytes
Reticular cells
make up the stroma along with fibers
Hilus/hilium
where blood vessels and efferent lymphatics enter/leave
Trabeculae
provide structural support, carry blood vessels/nerves
2 reasons immune cells can survey lymph for antigens
- lymph flows slowly due to reticular fibers
- lymph sinuses are leaky
What cells are mostly in follicles of the spleen?
B cells
What cells are mostly in periarteriolar lymphoid sheath in the spleen?
T cells
What cells are mostly in the marginal sone of the spleen?
macrophages
T/F: Reticular fibers are found in both white and red pulp
T
