Prior to the designation of immunity from the etymological root immunis, which is Latin for "exempt"; early physicians characterized organs that would later be proven as essential components of the immune system. The important lymphoid organs of the immune system are the thymus and bone marrow, and chief lymphatic tissues such as spleen, tonsils, lymph vessels, lymph nodes, adenoids, and liver. When health conditions worsen to emergency status, portions of immune system organs including the thymus, spleen, bone marrow, lymph nodes and other lymphatic tissues can be surgically excised for examination while patients are still alive. COUNT 5
QSN1 The term immunology is derived from a Latin word that means what? ANS1 exempt QSN2 What are the major organs of the immune system? ANS2 thymus and bone marrow, and chief lymphatic tissues such as spleen, tonsils, lymph vessels, lymph nodes, adenoids, and liver QSN3 Who originally discovered these parts of the immune system? ANS3 early physicians QSN4 How do physicians study a patient's immune system organs in emergency situations? ANS4 surgically excised for examination while patients are still alive QSN5 Which portions of the immune system can be safely removed in these emergency cases? ANS5 thymus, spleen, bone marrow, lymph nodes and other lymphatic tissues