Health science

disease causing microorganism

penetration of the skin, inhalation, ingestion

Serious allergic reaction that can be life-threatening

+Neutrophils – engulfs foreign organisms
+Macrophages – large cells/devour pathogens
+Natural killer cells – destroys virus & cancer cells
+Dendritic Cells – activates lymphocytes
+Lymphocytes – T cells, B cells; antibodies, helper, killer, suppressor

viruses are multiplying in the body or bacteria are actively multiplying, host can be contagious

+active immunity: pathogen introduced to stimulate the body to produce antibodies against it
+passive immunity: injection of antibodies produced by other human beings or animals who have recovered
+acquired immunity: the ability of a memory lymphocytes to remember a previous infection (chicken pox)

Microscopic single-celled organism (some are beneficial to our body)

extremely minute contagious agent

+Fungi - absorbs food from organic matter
+Protozoan – microscopic single-celled organism
+Parasitic worm – largest organism that can enter the body
+Prions – consist only of protein, trigger no immune response

Direct contact with infected blood (sharing of needles or blood transfusions)

rare form of cancer, common in HIV infected men

Bioterrorism (anthrax, smallpox, plague, botulism, Ebola

Gonorrhea, Chlamydia, Syphilis

Fever, fatigue, rashes, headache, swollen lymph nodes, body aches, night sweats, sore throat, nausea and diarrhea

most prevalent bacterial STD in the U.S. mostly among 15 – 24 year olds

genital warts
o Almost cause of all cervical/penis cancer

o Type 1 is associated with cold sores and fever blisters (common)
--Type 2 usually occurs during adolescence and early adulthood
-- Hepatitis B Virus (HBV) – more

more contagious than HIV

kanker sores

most common nonviral STD, increases risk of other STDs, HIV, and cervical cancer, can remain alive outside of body up to 6 hrs; severe itching, redness, pain; antibiotics

severe, unusual, persistent, recurrent

• Select meds with 1 ingredient

once opened, usually one year from that date

therapies or practices that do not form part of conventional, or “mainstream”, health care and medical practices taught in the US

acupuncture, homeopathy

: herbal therapies, dietary supplements

chiropractic

speeding, aggressive driving, fatigue & sleepiness, cellphones & other distractions, alcohol, drugs

• Wear a helmet & ride with the flow of traffic

falls, fires (cooking, smoking), poisoning

Due to misuse of equipment, lack of experience, using alcohol or drugs, not using safety equipment properly

Repetitive strain injuries (carpal tunnel syndrome

social factors, violence in the media

neglect