Passed Latest Update 2025-2026
what is the immune system? - Answers The body's defense against disease causing organisms,
malfunctioning cells, and foreign particles
what is immunology? - Answers study of immunity
what is the immune system physically composed of? (3) - Answers organs, cells, molecules
what are the four main groups of microbes? - Answers viruses, bacteria, fungi and protozoa
What are the primary lymphoid organs? - Answers bone marrow and thymus
what type of lymphoid organs have the role of production of white blood cells? - Answers
primary
what type of lymphoid organs have the role of being sites where immune responses are initiated?
- Answers secondary
what role does the bone marrow have in the immune system? - Answers source of stem cells
that develop into cells of the innate and adaptive immune responses
what role does the thymus have in the immune system? - Answers it teaches developing T cells
to not react to self
what are type of cells are T cells? - Answers white blood cells
what are lymphocytes produced or processed by the thymus gland and actively participating in
the immune response called? - Answers T cells
what role do lymph nodes and the spleen have to do with the immune system? - Answers site of
initiation of immune responses
Where are lymph nodes located? - Answers along lymphatic vessels
what is filtered through the lymph nodes? - Answers lymph fluid from blood and tissue
what is a site of initiation for immune responses against blood borne pathogens? - Answers
spleen
what type of pathogens is the spleen a site of initiation for? - Answers blood borne
what does the epidermis consist of? (3) - Answers dead cells, keratin and phagocytic immune
cells
what does the dermis consist of? (4 things) - Answers thick layer of connective tissue, collagen,
blood vessels, and phagocytic immune cells