Survey
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Trichinosis wikipedia , lookup
Middle East respiratory syndrome wikipedia , lookup
Human cytomegalovirus wikipedia , lookup
Hepatitis B wikipedia , lookup
Gastroenteritis wikipedia , lookup
Onchocerciasis wikipedia , lookup
Whooping cough wikipedia , lookup
Visceral leishmaniasis wikipedia , lookup
Schistosomiasis wikipedia , lookup
African trypanosomiasis wikipedia , lookup
Leptospirosis wikipedia , lookup
Lecture in Health 3 Despite all your body’s defenses, pathogens occasionally are able to enter your body and cause disease. When this happens, you suffer through the discomfort that an infection usually causes. A quick recovery, however, depends on getting rest and eating a well-balanced diet. Fever Inflammation or swelling Pain Chilling Loss of appetite Feeling of weakness Over production of mucus or pus Irritability Prodromal Stage 1-2 days First symptoms appear Acute Stage 2-5 days Most severe symptoms occur Recovery Stage 2-4 days Symptoms diminishing Disease is contagious Convalescence 1-3 days No symptoms but relapse possible Immunity Exposure Incubation Stage 1-3 days Pathogen enters the body and multiplies Physical and Chemical defenses Physical Defense a. Skin b. Mucous membranes c. Sneezing d. Cilia e. Coughing Chemical Defense a. Saliva b. Gastric juice c. Mucous d. Resident bacteria e. Urine Inflammation -the body’s response to all kinds of injury, from cuts and scrapes to internal damage caused by infectious diseases. The Immune System -the body’s last and most sophisticated line of defense against pathogens. -it is made up of cells in our blood, lymph bone marrow, and other tissues. -certain cells in the immune system are “tailor-made” for each pathogen. Types of Immunity Active immunity- immunity that our own body system create. It results from having a disease or receiving a vaccine. Passive immunity- immunity that is acquired by receiving antibodies from another immune system. 1. 2. 3. 4. 5. What are the three lines of defense against infection? Distinguish active from passive immunity. What are antibodies? Enumerate the 3 types of T cells and explain their function. How does a vaccine cause immunity?