Chapter 3: mechanisms of protection Flashcards
surface protection (keratin on skin, mucus, acidic environment) & acute inflammation are both examples of ___ immunity
innate
immune response, which includes humoral immunity & cell-mediate immunity are examples of ___ immunity
acquired (adaptive)
- immunity in response to bact/some virus
- B & plasma cells, w/ T cell involvement
- antibody production
humoral immunity
- immunity in response to viruses, fungi, foreign cells
- T cells (not B dependent)
- cytotoxic response
cell-mediated immunity
the ____ ____ functions to
- store lymphocytes
- increase lymphocytes
- favorable environment for establishing immunity
immune system
___ lymphatics has no/incomplete capsul and includes hu oral immunity, while lymphatic ____ have a capsule and involve both humoral & cell mediated immunity
diffuse
organs
___lymphoid organs provide an environment where lymphocytes become immunocompetent
primary
two examples of primary lymphoid organ
thymus (B cells) bone marrow (T cells)
____ lymphoid organs provide environment where lymphocytes can contact foreign antigens and interact with each other
secondary
two examples of secondary lymphoid organs
spleen
lymph nodes
MALT, a type of diffuse lymphatic, stands for __ __ __ __
-is found in gastrointestinal, respiratory, urogenital tracts
mucosal associated lymphatic tissue
this is secreted onto free epi surfaces and is important first line of defense against infection
- antigen specific
- neutralizes viruses & bact toxins
- decreases microbial adhesion to host cells
secretory IgA
examples where secretory IgA is found (free epi surfaces)
tears saliva gut lumen nasal cavity vaginal surface
GALT is ___ associated lymph. tissue and is found in the GI tract: indivual lymph nodules and ileum peyer’s patches
-subcategory of MALT
gut
BALT is ___ associated lymph tissue, found in lymph nodules w/i respiratory system, when air tubes bifurcate
-subcategory of MALT
bronchial
tonsils, a type of diffuse lymphatic, can either have ____ ___ or ___ ___
epithelial folds (pleated) tonsilar crypts
epithelial fold/pleated tonsil type that:
- have 1 in roof of nasopharynx above uvula
- surface epi is respiratory epi
pharyngeal tonsils
when pharyngeal tonsils are inflamed, they are called _____, can block eustachian tubes and cause ___ ___
adenoids
ear infections
two tonsil types with tonsilar crypts
palatine
lingual
tonsilar crypt tonsil type that:
- is at the boundary of oral cavity/oral pharynx
- surface epi is stratified squamous
- aka faucial tonsils
palatine
more area for: -detecting foreign antigens -getting trapped in crypts -increased S.A. for lymph nodule formation in CT are all:
advantages of palatine tonsils
- deep depressions for bacteria to thrive
- inflammation can cause tonsiliting
disadvantages of palatine tonsils
tonsilar crypt tonsil that is:
- dorsal posterior 1/3 of tongue
- in oral cavity
- surface epi is stratified squamous
lingual
tonsillar ring around the openings to the digestive and respiratory systems
waldeyer’s ring
