Presentation on theme: "Quick write 1.Notes ** What Causes Infectious Diseases? 2.Handout 1 Re-teaching 2 sides 3.How Are Infectious Diseases Treated? 4.Notes** How Your Body."— Presentation transcript:
Quick write 1.Notes ** What Causes Infectious Diseases? 2.Handout 1 Re-teaching 2 sides 3.How Are Infectious Diseases Treated? 4.Notes** How Your Body Fights Disease 5.Handout 2 both sides 6.What You Can Do to Stay Well
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Section 1 What Are Infectious Diseases? List 5 ways a person might come into contact with infectious organisms. Chapter 13
** What Causes Infectious Diseases? Infectious diseases are diseases caused by agents invading the body. Bacteria are single-celled organisms, some of which cause disease. Other kinds of bacteria are harmless or even helpful to the body. Tetanus, tuberculosis, and sinus infections are bacterial diseases. Chapter 13 Section 1 What Are Infectious Diseases?
** What Causes Infectious Diseases? Viruses are tiny disease-causing particles made up of genetic material and a protein coat. Viruses survive and replicate inside living cells. Colds, the flu, measles, chicken pox, and AIDS are viral diseases. Fungi are organisms that absorb and use the nutrients of living or dead organisms. Some fungi cause diseases, such as athletes foot and ringworm. Chapter 13 Section 1 What Are Infectious Diseases?
** What Causes Infectious Diseases? Protozoans are single-celled organisms that are larger and more complex than bacteria. They account for some of the leading causes of death worldwide, including malaria. Parasites get their energy and nutrients by feeding on other living things. Head lice, tapeworms, and some roundworms are parasites. Chapter 13 Section 1 What Are Infectious Diseases?
Handout 1 Reteaching SECTION: WHAT ARE INFECTIOUS DISEASES? Part I Read pages 316 – 319 Complete both sides
Re-teaching SECTION: WHAT ARE INFECTIOUS DISEASES? Part I 1.bacteria 2.virus 3.protozoan 4. fungus 5. bacteria 6. virus 7. virus Part II 15. sneezing, coughing, breathing, touching objects, kissing, drinking from the same glass, sexual contact 16. food contamination, drinking water from streams and lakes, drinking untreated water exposed to sewage or animal wastes 17. on objects like your phone or money, in soil 18. in or on animal bodies, even your pets; animal or insect bites 8. fungus 9. bacteria 10. Virus 11. Bacteria 12. Virus 13. Bacteria 14. parasite Check your answers
Handout 1 Concept Review WHAT ARE INFECTIOUS DISEASES? flu, cold, tuberculosis, malaria, athletes foot, measles, food poisoning Caused by: fungi, bacteria, protozoa, Viruses, parasites Spread by: food and water, animals, Environment, person to person Check your answers
How Are Infectious Diseases Treated? Antibiotics are medicines used to kill or slow the growth of bacteria. Examples include penicillin, tetracycline, and streptomycin. Antibiotic resistance is a condition in which bacteria can no longer be killed by a particular antibiotic. Improper use of antibiotics contributes to the growth of antibiotic-resistant bacteria. Chapter 13 Section 1 What Are Infectious Diseases?
Chapter 13 Section 1 What Are Infectious Diseases?
How Your Body Fights Disease Physical barriers to pathogens include: Chapter 13 Skin Mucous membranes Chemicals Inflammation is a reaction to injury or infection characterized by pain, redness, and swelling. Section 2 Protecting Yourself from Infectious Diseases
** How Your Body Fights Disease The immune system is the bodys system for fighting disease once it is in the body. White blood cells are cells in the blood that defend the body against disease. Antibodies are proteins that mark pathogens to be destroyed by white blood cells. The lymphatic system is a network of vessels that carry lymph throughout the body, carrying viruses and bacteria back to the lymph nodes. Chapter 13 Section 2 Protecting Yourself from Infectious Diseases
Handout 2 SECTION: How Your Body Fights Disease Part 2 Read pages 324 – 325 Complete both sides
IMMUNE SYSTEM 1. The immune systems function is to defend the body against disease by recognizing, attacking, and destroying alien invaders such as viruses and bacteria. 2. A weakened form of virus is introduced into the system when a person is vaccinated. This triggers the formation of antibodies, which destroy the virus. Antibodies remain in the system as long-term protection against the virus. They are important to prevent contraction of diseases such as polio or rubella. 3. Swollen glands may mean that your lymph nodes are at work filtering germ particles and damaged cells from an infection. 4. Student answers may vary. Students may suggest that nutrition and rest or reduction of stress will aid the immune system. Check your answers
SECTION: PROTECTING YOURSELF FROM INFECTIOUS DISEASES 1. antibodies; blood cells 2. pathogens 3. blood vessels; lymphatic system 4. fluid 5. white blood cells 6. destroy 7. memory cells Check your answers
What You Can Do to Stay Well Protect yourself. Eat a healthy, balanced diet. Drink plenty of water. Reduce your stress levels. Exercise regularly. Get regular medical checkups. Avoid close contact with sick people. Get enough sleep. Stay up to date on all available vaccines. Chapter 13 Section 2 Protecting Yourself from Infectious Diseases
How to Prevent the Spread of Disease Get vaccinated. Keep clean by washing with soap frequently. Dont share food, drinks, or personal items such as toothbrushes. Cover your mouth when you sneeze or cough. Chapter 13 Section 2 Protecting Yourself from Infectious Diseases
What to Do When You Are Sick Stay home and rest. Drink plenty of fluids. Throw away tissues you use right away. Follow all the directions your doctor gives. Chapter 13 Section 2 Protecting Yourself from Infectious Diseases
Diseases Affect Everybody No matter how healthy we are, we all become ill from diseases sometimes. There are so many pathogens in so many places it is impossible to avoid them. The best defense against pathogens is avoiding behaviors that increase our chances of infection. Chapter 13 Section 3 Common Infectious Diseases
Chapter 13 Section 3 Common Infectious Diseases
Chapter 13 Section 3 Common Infectious Diseases
Life Skills TREATING A DISEASE Part I 1. mononucleosis, virus 2. measles, virus 3. strep throat, bacteria Part II 4. Only Jake could be prescribed an antibiotic because bacteria causes his disease. Antibiotics kill or slow the growth of bacteria. Enrique and Robin should not be prescribed an antibiotic because antibiotics have no effect on viruses. 5. People should take the full course of the antibiotic. Stopping the medication too early may allow bacteria to continue to grow, resulting in a relapse of the disease. Check your answers