Flashcards in Immune cells Deck (81)
What are the 3 mechanisms of protection for the immune system?
Surface protection (mucus, keratin on skin, etc.)
What is the difference between humoral immunity and cell mediated immunity
Humoral: usually in response to bacteria
Cell mediated: usually in response to virus, fungi, foreign cells
True or false; Cell mediated immunity is mediated by T cells
True or false; Cell mediated immunity depends on B cell participation
False; it does not depend on B cell participation
Which form of immune response involves antibody production
True or false; humoral immunity is mediated by B cells and plasma cells
What are characteristics of diffuse lymphatics? What are a couple the lymphatic organs associated with it
no or incomplete capsule
(Mucosal-associated lymphatic tissue "MALT") (Tonsils)
What are characteristics of lymphatic organs? What are examples lymphatic organs?
HAS a capsule
Humoral AND cell-mediated immunities
(Lymph nodes, spleen)
True or false; lymphatic organs are associated with both humoral and cell-mediated immunities
What are the 2 primary lymphoid organs
Thymus (T cells)
Bone marrow (B cells)
What kind of lymphoid organ provides an environment where lymphocytes become immunocompetent
Primary lymphoid organs
What are the 3 examples of secondary lymphoid organs
Diffuse lymphatics (MALT, Tonsils)
True or false; secondary lymphoid organs provide an environment where lymphocytes can contact foreign antigens
Where would you find MALT? (mucosal-associated lymphatic tissue)
gastrointestinal, respiratory, and urogenital tracts
True or false; tears, saliva, gut lumen, nasal cavity, and vaginal surface are all areas you would expect to find secretory IgA
What are the 2 major functions of lymph nodes
Filtration of lymph using phagocytosis
Establish humoral and cell mediated immunities
What kind of connective tissue makes up the capsule (outside) of lymph nodes
What are the trabeculae in lymph nodes?
(septa) divides lymph node into compartments
What kind of vessels are found in the hilum of lymph nodes?
Efferent (outgoing vessels) + artery and vein
In a lymph node; where is the subcapsular or marginal sinus located?
under the capsule
In a lymph node; the cortical sinus passes through what?
In a lymph node; the deep cortical sinus passes through what?
In a lymph node; the medullary sinus passes through what?
In a lymph node; cells within all regions and sinuses are supported by a system of what?
The reticular fibers that support all cells and sinuses in lymph nodes are produced by what?
The primary cell type found in the cortex of lymph nodes is what?
What activity is happening in the cortex of the lymph nodes
phagocytosis and humoral immunity
What kind of lymph nodule has no germinal center, and is a older lymph nodule or a group of B cells and B memory cells
Primary lymphoid nodule
What kind of lymph nodule has a germinal center, forms in response to a foreign antigen, and is B cells dividing
Secondary lymphoid nodule