20 Questions
Which lymphoid organ serves as the site for T lymphocytes maturation?
Thymus
What is the function of HEVs (high endothelial venules) in the lymphatic system?
Transporting lymphocytes into lymph nodes
What is the clinical significance of DiGeorge Syndrome in relation to the lymphatic system?
Defective T lymphocyte development
Which structure is a part of MALT (mucosa-associated lymphoid tissue)?
Peyer's patches
What is the primary function of stave cells in the spleen?
Filtration of blood
Which cells are responsible for presenting thymic antigens to immature lymphocytes during positive selection?
Type II epithelioreticular cells
What is the main function of Hassall's corpuscles in the thymus?
Production of T cell maturation hormones
What is the primary reason for the absence of reticular fibers in the thymus?
To prevent the infiltration of blood-borne antigens
Which type of epithelioreticular cells form Hassall's corpuscles in the thymus?
Type VI
What is the main purpose of the blood-thymus barrier?
To maintain a privileged area for T cell development
Where do T lymphocytes migrate after leaving the high endothelial venule (HEV)?
Inner cortex
What is the function of the splenic pulp's white pulp?
Designed to facilitate immune responses
What appears due to the proliferation of B lymphocytes in the splenic pulp?
Germinal center
What is the function of stave cells in the red pulp of the spleen?
Phagocytose old red blood cells
Which model of blood circulation does the spleen follow based on experimental and morphologic evidences?
Open circulation
Where are high endothelial venules (HEVs) mainly located?
Spleen
What is the function of the appendix?
The exact function is unclear
Where are microfold (M) cells mainly found?
Peyer’s patches
Which structure contains the mantles zone rich in T lymphocytes?
Lymphatic nodules
In which structure do lymphocytes circulate through high endothelial venules (HEVs)?
Lymph nodes
Test your knowledge about the characteristics and locations of lymphatic nodules and lymph nodes in the body. Learn about the differences between encapsulated and unencapsulated lymphatic tissues.
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