Presentation on theme: "Disease Pages 329-343. Disease Does not allow the body to function normally Can affect individual organs or an entire body system Divided into two."— Presentation transcript:
Immune System responsible for distinguishing (telling the difference) between the different kinds of pathogens Reacting to each kind according to its type
When a pathogen enters the body It works by damaging individual cells within the organs In some cases it attacks an entire body system
Some Infectious Diseases You Should Know Colds Flu Strep Throat Athlete’s Foot AIDS
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
Flu Influenza, commonly known as “the flu”, is a highly contagious viral disease of the respiratory system Typically causes fever, muscle aches, and a more severe cough than the common cold and usually lasts longer
Athlete’s foot Common fungal infection of the skin of the feet May be contracted from public environments Grows in the warm and moist environment usually between the toes Difficult to cure
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
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
Let’s follow the journey of a pathogen as it attacks its victim!
Non-infectious Diseases Not caused by pathogens in the body Not spread from organism to organism
Non-infectious Diseases are caused by malfunctions in the body. Heredity – information you get from your parents The environment – examples are sun, radiation, chemicals Lifestyle choices – smoking, drugs, alcohol
Types of Noninfectious Diseases Diabetes Asthma Parkinson’s disease Skin Cancer
Diabetes AAAA disease that results in glucose (sugar) level being higher than normal. IIIIt is caused by the person’s inability to either produce or use properly a natural chemical made in the body (pancreas) called insulin.
Diabetes may lead to Kidney disease Heart disease Vision problems
High levels of blood sugar lead to disorders Like an increase in problems with circulation
Parkinson’s Disease Disease of the nervous system that occurs when nerve cells in the brain stop functioning properly, affecting the muscular system
Parkinson’s Disease Major symptoms Severe shaking (tremors) Disabilities involving movement At present, there is no cure
Skin Cancer Disease in which skin cells found in the outer layers of the skin become damaged.
Factors that lead to Skin Cancer Damaging ultraviolet rays (UV) from the sun or tanning beds heredity
Asthma Affects the lungs and the airways that deliver air to the lungs Causes periodic attacks of wheezing and difficulty breathing
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
Resources Body Story: Germs. Discovery Channel School. 2002. unitedstreaming. 5 December 2006 Body Story: Germs. Discovery Channel School. 2002. unitedstreaming. 5 December 2006