define immunity
body’s ability to resist or eliminate potential harmful or foreign materials or cells
what are 2 inappropriate responses the immune system can have?
allergies
autoimmune diseases
what 2 types of immunities exist in the immune system?
Innate and adaptive immunity
What are the primary lymphoid organs? what occurs there?
bone marrow and Thymus
site of lymphocyte synthesis
what are the secondary lymphoid organs? what occurs there?
lymph nodes, spleen, tonsils, various tissues
contain cells of the immune system that fight
what cells mature in the Thymus?
lymphocytes
what are the 2 compartments of the spleen?
White pulp
red pulp - removes red blood cells and pathogens