OTH: Immune System Flashcards
What are the central structures of the immune system?
Thymus and bone marrow
What are the peripheral structures of the immune system?
Lymph nodes
Spleen
Other accessory structures
This immune cell is a foreign molecule and illicits the immune response
Antigen
Antibodies (or immunuglobulins) are proteins that tag ______
Antigens
What are the primary cells of the immune system?
T and B lymphocytes
This immune cell presents the antigen to the lymphocytes
Macrophages
This immune cell is the master regulator of the immune response - they influence the function of other immune cells
CD4 helper cells
The _____ ______ ______ allows the body to recognize threat from self
Major histocompatibility complex (MHC)
Where is the thymus located?
What does the thymus produce?
Behind sternum, above heart, and extends into neck
Produces mature T lymphocytes
What cells are found in the lymph nodes?
Lymphocytes
Monocytes
Plasma cells
Spleen is found where?
LUQ btw stomach and diaphragm
The spleen produces what cells?
Leukocytes
Monocytes
Lymphocytes
And plasma cells
In response to infection
Immune response: when you have repeat exposure to an antigen, it activates immunological ______
If you have excess immune response, you form _____ or ______ reactions
Memory
Allergies or autoimmunes rxns
Primary immunodeficiency disease is due to a DEFECT in ___ cells, ____ cells, and _____ tissues
T cells
B cells
Lymphoid tissue
Example of primary immunodeficiency disease?
Congenital disorder (ex: the organs did not develop and produce mature lymphocytes)
Severe combined immune disease (SCID)
Secondary immunodeficiency disease is due to ______ _______ or ____ that depressed the immune system
Underlying patho
Treatment
Ex: leukemia, bone marrow tumor, chronic RM, renal failures, CA tx, organ transplant
Autoimmune diseases can be ____ specific or _____
Etiology?
Organ
Systemic
U/K
HIV:
What immune cell is decreased?
CD4+ helper cells —> CD4+ T lymphocytopenia
HIV:
Stage 1: (Acute HIV infection): ___-Iike symptoms
Within how many weeks after infection?
FLU LIKE
2-4 weeks after infection
HIV:
Stage 2: (clinical latency)
Symptomatic/asymptomatic? HIV infection or _____ HIV infection
Decade or more.
Asymptomatic
Chronic
HIV:
Stage 3: (______) - most severe, opportunistic illness
STAGE 3 is AIDS
HIV: In order for transmission to occur, blood, semen, rectal/vag fluid, breast milk must contact _____ _____, _____ ____, or from _____
Mucous membrane
Damaged tissue
Syringe
HIV:
Diagnosis - Positive results from TWO TESTS: what are they?
CD4 count: 500-1200 cells/mm
Testing with HIV1/HIV2 antigen/antibody combo immunoassays
AIDS:
What is the diagnosis process?
CD4 count is below 200 cells/mm or certain opportunistic illness
VERY INFECTIOUS