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Published byAnnice Jenkins Modified over 8 years ago
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COMMUNICABLE AND NON-COMMUNICABLE DISEASES
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AFTER THIS LESSON YOU WILL BE ABLE TO: Compare and contrast between non-communicable and communicable diseases Define the common pathogens that cause communicable diseases
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DISTINGUISH BETWEEN COMMUNICABLE AND NON-COMMUNICABLE DISEASES –Non-Communicable disease –Also called non-infectious diseases –For example: Heart disease –Communicable diseases –Also called infectious diseases. –Passed through direct/indirect contact
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NON-COMMUNICABLE DISEASES Diseases that CANNOT be spread from one person/thing to another Diseases that are not caused by pathogens (bad germs) Can affect any system in the body (circulatory, nervous, respiratory) Can be treated but not usually cured
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CAUSES OF NON-COMMUNICABLE DISEASES 1. Hereditary-passed from parent to child 2. Environmental –Where you live –or work –For example: Nuclear power plant 3. Lifestyle –Poor health habits – tanning, smoking, drinking, poor diet, lack of exercise and emotional stress.
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PREVENTING NON-COMMUNICABLE DISEASE Have a balanced diet Get regular exercise Avoid tobacco, alcohol, and other drugs Regular check-ups can identify early warning signs
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COMMON NON-COMMUNICABLE DISEASES Cancer Cardiovascular disease –Heart Attack –Stroke
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COMMUNICABLE DISEASES Definition Caused by direct or indirect spread of pathogens (bad germs) from a person or thing to another.
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PATHOGENS AND VECTORS Pathogens are disease causing agents (bad germs) Vectors are disease-causing organisms that carry pathogens from one host to another –For example: Mosquitoes transmit malaria Ticks transmit Lyme disease
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HOW DISEASES ARE SPREAD –Direct contact - touching infected area of person –Indirect - sneezing, coughing, sharing personal items –Contact with vectors (animals and insects) - bites –Other contact - eating contaminated foods
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WHERE DISEASES ENTER THE BODY Mouth Eyes Nose A break in skin (cuts) Genitals
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PREVENTION FOR COMMUNICABLE DISEASES Wash hands Cover mouth when sneezing or coughing Proper care of food, don’t share food Eat healthy and exercise to improve immune system Shower daily
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COMMON TYPES OF PATHOGENS –Bacteria –Virus –Fungi –Protozoan
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BACTERIA –(100 million will fit in a grain of sand.) –Most common of all pathogens. –Most DO NOT cause disease. –Reproduces through cell division. –Examples:Strep throat, Lyme disease
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BACTERIA VIDEO http://webcast.mediaondemand.com/library_video/20000901/27_bacteria_300.asx
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VIRUS –All viruses are considered Parasites –Smallest and simplest of micro- organisms. –Can only live on living cells It tricks human cells to reproduce more viruses. –Examples- chicken pox, cold, flu, measles, rabies, HIV/AIDS
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PROTOZOA –Most are harmless –One celled organism –Grows in water –Multiples quickly in moist places –For example: Malaria
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FUNGI –Live off non-living things. –Include molds, yeast, and mushrooms –Live in warm moist places such as locker room floors –Examples: Ring worm / athletes foot
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FUNGI Athlete’s Foot Ring Worm
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THE BODY’S PRIMARY DEFENSES AGAINST DISEASES Skin Mucus Membrane Cilia
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BODY’S PRIMARY DEFENSES AGAINST COMMUNICABLE DISEASE S Skin Most important – keeps out harmful germs Produces sweat that kills some types of pathogens
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BODY’S DEFENSE AGAINST COMMUNICABLE DISEASE Mucus Membrane Cells that line nose, mouth and throat produce mucus to trap germs
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Body’s Defense Against Communicable Disease Cilia Wavelike hairs that sweep out germs from throat, nose, etc
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BODY’S SECONDARY DEFENSES Fever – the temperature of the body increases to slow multiplication of pathogens White Blood Cells – special cells that kill pathogens Chemical Barriers – tears and saliva Reflexes – blinking, coughing and sneezing
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