All of the following organs are catagorised as secondary lymphoid organs, EXCEPT?
Correct Answer: Thymus
Description: Major secondary lymphoid organs are spleen and lymph nodes. Other secondary lymphoid organs includes tonsils, appendix, peyers patches in the intestine and lymphoid aggregates spread throughout mucosal tissue. Mucosal lymphoid organs are termed as MALT, those in the gut are GALT, and those in bronchial tree are BALT. Thymus is not a secondary lymphoid organ, it is a primary lymphoid organ. Functions of secondary lymphoid organs are trapping and concentrating foreign substances, production of antibodies and induction of antigen specific lymphocytes. Functions of spleen are storage of red blood cells, production of blood cells before bih, production of antibodies by lymphocytes and plasma cells in the white pulp following contact with antigen and its subsequent transformation into antibody producing cells, filtration of blood by phagocytosis and destruction of worn out red blood cells with release of hemoglobin.
Category:
Anatomy
Get More
Subject Mock Tests
Practice with over 200,000 questions from various medical subjects and improve your knowledge.
Attempt a mock test nowMock Exam
Take an exam with 100 random questions selected from all subjects to test your knowledge.
Coming SoonGet More
Subject Mock Tests
Try practicing mock tests with over 200,000 questions from various medical subjects.
Attempt a mock test now