The immune system 1.Is scattered throughout the body and uses different parts of other systems. 2.Begins with the skin the seal out possible infections. 3.Then the mucus membranes to flush out possible infections. (examples are tears in eyes, nose, saliva in mouth and acids in stomach)

4. Fights infection and diseases. Infection– pathogens enter body. Disease—condition that keeps the body from functioning normally. 5. Pathogens cause disease. Pathogens include viruses, bacteria, protists and fungi. 6.Diseases are either infectious or non- infectious. Infectious diseases are transmitted person to person.

Activity: 1.Exchange test tube materials with at least 4 other individuals. 2.After you are finished return to your seat. 3.Remove your dropper when I come to “test” you.

results Clear– no contact Cloudy white– in contact, not infected Light pink– have HIV, maybe 5-10 years left Bright pink– Has AIDS, 6 months to live Write in your booklet 1. How you felt waiting on the test. 2.What it would really mean in your life 3.How can it be prevented? 4.Would being infected be a reason to not communicate with someone? Why?

Agenda 3/19 Bell ringer in pink booklet Standard: recall major organs and their function within their system. Objective: students will describe the effects of the various diseases. Objective: Students will describe the effects of infectious diseases and non infectious diseases. Instruction 1.Bell ringer 2.Check hw 3.notes using booklet 4.Discussion on immune system

3/19 Bell ringer 1. Providing movement is a main function of one of the organ systems of the body. This system is the — A.muscular system. B.skeletal system. C.nervous system. D.excretory system Which disease is caused by fungus? A.Athlete’s foot B.Hepatitis B C.Lung cancer D.Strep throat Which disease is caused by bacteria? A.Arthritis B.Leukemia C.Tuberculosis D.Yeast infection

Infectious Diseases 7.These pathogens can come from another person, a contaminated object, an animal bite, or the environment. 8.The immune system is responsible for distinguishing between the different kinds of pathogens and reacting to each according to its type. 9. Once a pathogen enters has entered the body, it works by damaging individual cells within the organs or in some cases attacks an entire body system.  Examples of infectious diseases include: 10. Colds-- caused by a viral infection located in the respiratory system. It multiplies and attacks the mucous membranes of the nose and throat causing the common effects of the cold (for example, sore throat, runny nose or fever). Because the cold is caused by a virus it cannot be treated with an antibiotic.

11. Flu Influenza, commonly known as "the flu," is a highly contagious viral infection of the respiratory system. Influenza typically causes fever, muscle aches, and a more severe cough than the common cold and usually last longer. 12. Athlete’s Foot -- A common fungal infection of the skin of the feet. The fungus may be contracted from public environments and then grows in the warm and moist environment usually between the toes, and can be difficult to cure.  13. AIDS Acquired immunodeficiency syndrome (AIDS) is caused by the human immunodeficiency virus (HIV). This virus attacks the cells in the immune system making the organism unable to fight off other pathogens that may attack the body. 14. Strep throat-- a contagious disease caused by bacterial infection. Strep throat symptoms include fever, pain, redness, and swelling of the throat and tonsils. Strep throat may produce mild or severe symptoms.

15. Noninfectious diseases are diseases that are not caused by pathogens in the body. They are not spread from organism to organism. These diseases are caused by malfunctions in body systems that are either inherited or caused by environmental factors. 16. Examples of noninfectious diseases include::  Diabetes A.A disease that results in the glucose (sugar) level of the blood being higher than the normal range. B.It is caused by a person’s inability to either produce or use properly a natural chemical produced in the body called insulin. C.The higher level of blood sugar causes many disorders of the body, for example an increase in problems with circulation of blood. D.Diabetes can lead to kidney disease and heart disease or cause vision problems.

17. Parkinson’s Disease A.A disease of the nervous system that occurs when certain nerve cells in the brain stop functioning properly, affecting the muscular system. B.The major symptoms are severe shaking (tremors) and disabilities involving movement. C.At present, there is no cure for Parkinson's disease. 18. Skin Cancer A.A disease in which cancer cells found in the outer layers of the skin become damaged. B.Factors that can lead to skin cancer are damaging ultraviolet rays (UV) from the Sun or tanning beds and heredity. 19. Asthma A.Asthma is a disease that affects the lungs and the airways that deliver air to the lungs. B.It causes periodic attacks of wheezing and difficult breathing. C.An asthma attack occurs when the airways become inflamed in response to a stimulus, such as dust, mold, pets, exercise, or cold weather. D.However, some attacks start for no apparent reason