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Disease

Disease. Pages 329-343. Disease. Condition that does not allow the body to function normally Can affect individual organs or an entire body system Divided into two groups –infectious and non-infectious. Infectious Disease. A disease that can be passed from organism to organism

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Disease

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  1. Disease Pages 329-343

  2. Disease • Condition that does not allow the body to function normally • Can affect individual organs or an entire body system • Divided into two groups –infectious and non-infectious

  3. Infectious Disease • A disease that can be passed from organism to organism • Caused by tiny organisms called PATHOGENS

  4. 4 KINDS OF PATHOGENS that cause infectious disease • Bacteria • Viruses • Fungi • Protists

  5. Pathogens can be spread • Person to person

  6. Contaminated objects

  7. Animal bite

  8. The Environment

  9. Immune System responsible for • distinguishing (telling the difference) between the different kinds of pathogens • Reacting to each kind according to its type

  10. When a pathogen enters the body • It works by damaging individual cells within the organs • In some cases it attacks an entire body system

  11. Colds • Illness caused by a viral infection located in the respiratory system • The cold virus multiplies and attacks the mucous membranes of the nose and throat causing the common effects of the cold (sore throat, runny nose, fever…) • Cold can not be treated with an antibiotic because it is caused by a virus (antibiotics don’t work against viruses

  12. Flu • Influenza, commonly known as “the flu”, is a highly contagious viral disease of the respiratory system • Effects are fever, muscle aches, and a more severe cough than the common cold and usually lasts longer

  13. Athlete’s foot • Common fungal infection of the skin of the feet • Fungus may be contracted from public environments • Grows in the warm and moist environment usually between the toes • Difficult to cure

  14. AIDS • Acquired immunodeficiency syndrome (AIDS) • Caused by the human immunodeficiency virus (HIV) • The virus attacks the cells in the immune system making the organism unable to fight off other pathogens that may attack the body

  15. Strep Throat • Contagious disease caused by bacterial infection • Symptoms include fever, pain, redness and swelling of the throat and tonsils • May produce mild or severe symptoms

  16. Non-infectious Diseases • Not caused by pathogens in the body • Not spread from organism to organism

  17. Non-infectious Diseases are caused by malfunctions in the body. • Inherited – born with genes you get from your parents • The environment – examples are sun, radiation, chemicals

  18. Diabetes • A disease that results in glucose (sugar) level being higher than normal. • It is caused by the person’s inability to either produce or use properly a natural chemical made in the body (pancreas) called insulin.

  19. Diabetes The higher level of blood sugar results in many disorders of the body, for example an increase in problems with circulation of blood

  20. Diabetes may lead to • Kidney disease • Heart disease • Vision problems

  21. Parkinson’s Disease • Disease of the nervous system that occurs when nerve cells in the brain stop functioning properly, affecting the muscular system

  22. Parkinson’s DiseaseMajor symptoms: • Severe shaking (tremors) • Disabilities involving movement • At present, there is no cure

  23. Skin Cancer • Disease in which skin cells found in the outer layers of the skin become damaged.

  24. Factors that lead to Skin Cancer • Damaging ultraviolet rays (UV) from the sun or tanning beds • heredity

  25. Asthma • Affects the lungs and the airways that deliver air to the lungs • Causes periodic attacks of wheezing and difficulty breathing

  26. Asthma attacks • Occur when the airways become inflamed in response to a stimulus, such as dust, mold, pets, exercise, or cold weather • Some attacks start for no apparent reason

  27. What do I need to know? Be able to classify bacteria by their shape and protists (euglena, paramecium, amoeba) by the way they move and gather food. Bacteria are in the kingdom….. MONERA!!!!

  28. Bacteria are: • One-celled organisms (with no nucleus) • Categorized by their shape!!!!! • There are 3 basic bacterial shapes in the Kingdom Monera

  29. Round – referred to as cocci 2. Rod Shaped- known as bacilli 3. Spiral – corkscrew shaped; known as spirilla

  30. Resources • Body Story: Germs. Discovery Channel School. 2002.unitedstreaming. 5 December 2006<http://www.unitedstreaming.com/>

  31. www.a1organics.com/images/pathogens.jpg • www.monografias.com/trabajos5/virus/Image166.gif • www.uwlax.edu/.../Visuals/athletesfoot.jpg • www.ucmp.berkeley.edu/.../paramecium1.gif • www.fordogtrainers.com • moon.ouhsc.edu • www.wcasohio.org • www.kidsplanet.org • www.missouri.edu • tiee.ecoed.net • www.moea.state.mn.us • colds.upmc.com

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