Final Exam Flashcards
PSYCHONEUROIMMUNOLOGY
the study of the interactions between behavioral, neuroendocrine, and immunological responses
IMMUNE SYSTEM FUNCTIONS
protects us from disease and infections using tissues that make, store, and carry white blood cells
IMMUNE SYSTEM COMPONENTS
bone marrow, tonsils, thymus, spleen, lymph, lymph nodes, and lymphatic vessels
IMMUNE RESPONSE
pathogens enter the body (make you sick) and have antigens, which help the body recognize which cells are foreign, then antibodies are released from B cells to attach to antigens and remove the pathogens from the body
WHITE BLOOD CELLS
protect against infections, many types including basophils, neutrophils, monocytes, and lymphocytes
LYMPHOCYTES
t-cells kill viruses directly
b-cells release antibodies for specific antigens
natural killer cells control tumors and microbial infections by limiting their spread and subsequent tissue damage
CANCER
rapid reproduction of irregular or damaged cells that form a tumor
typically these cells should die off through apoptosis
METASTASIS
when the cancer spreads to parts of the body other than the original site; the cancer is still named after the original location
ex: lung cancer that metastasizes to the brain is still lung cancer
BENIGN VS. MALIGNANT
a benign tumor is not cancerous and will not spread, whereas a malignant tumor is cancerous and can spread
4 KINDS OF CANCER
carcinoma: most common, of the internal or external body surface linings (lung, breast, colon, stomach)
sarcoma: least common, of the supporting tissues (bones, fat, cartilage)
lymphoma: of the lymph nodes and white blood cells
leukemia: of the red blood cells
CANCER RISK FACTORS
excessive sun exposure
exposure to hazardous work materials
heredity/genes
high fat diet
hormones
stress: depression and maladaptive coping styles predict development of cancer and faster progression
personality: type c personality which is easy going and represses emotions
CANCER PREVENTION
limit sun exposure limit exposure to harmful chemicals or industrial pollution limit non-lean meats, fats, and calories consume fruits and veggies avoid cancer viruses like HPV
HIV/AIDS
human immunodeficiency virus and acquired immunodeficiency syndrome
HIV is a retrovirus
HIV AS A RETROVIRUS
a retrovirus is a virus that invades a host cell to replicate its RNA to reproduce
HIV is a retrovirus that attacks CD4 T cells and replicates itself using reverse transcriptase, destroying the host cell
CD4 T CELLS
these cells are targeted by HIV and when HIV replicates itself inside, it destroys the T cell
the result is declining numbers of T cells which can eventually lead to AIDS
a healthy person should have 500-1200 T cells
HIV REGIMENTS
HIV treatment plans typically consist of 3 different antiretroviral medications for the best outcomes. Antiretroviral medications target the enzyme that allows the virus to replicate itself to stop its spread. The treatment plan a person uses depends on their symptoms, CD4 count, and viral loads
HIV WINDOW PERIOD
it takes 28 days for antibodies to become detectable in the body, but it can take up to 3-6 months, sometimes even longer
HIV HEALTH DISPARITIES
black MSM are the mostly likely to get HIV, followed by IDUs (injection drug users)