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Immune system powerpoint SSA+S
- 2. FUNCTIONS
- 3. Diseases and bacteria are considered pathogens. When pathogens get past your body’s barrier your immune system comes and has defenses to block them .There are cells that help kill the pathogens when your immune system works with other body systems and helps you keep you healthy.
- 4. Major parts and organs
- 5. Some major parts that help the immune system are the Integumentary system (skin , nails , and hair The respiratory system , the circulatory system, digestive system, and nervous system.
- 6. Your skin is the first line of defense. It keep dirt and other germs out of your body. Sweat and acids from your skin cells kill other bacteria and natural oils on you skin make your skin waterproof so you can wash it off easily. Pathogens can survive everywhere for long periods of time, that’s why you need to wash your hands. Pathogens can enter through your nose, mouth, eyes, and cuts.
- 7. Since you can inhale bacteria through your nose and mouth, little hairs will act like a barrier. The hairs in your nose can trap pathogens and dirt so they won’t reach the rest of your respiratory system. Cilia also helps by trapping dirt and pathogens and move them out of the respiratory system. If pathogens get passed the cilia they get trapped in mucus and you get rid of them by sneezing swallowing, or coughing.
- 8. Acids are another type of barrier. Pathogens can enter through the foods you eat. So when the foods reach your stomach strong acids are there and they trap disease – causing bacteria and viruses. When they aren’t destroyed , your digestive system basically flip flops and you vomit. If that doesn’t happen your muscle contractions speed up and you gain diarrhea.
- 9. The Immune system works with the Circulatory and the Respiratory system to put up barrier walls to protect against invaders.
- 10. With help from other systems including the circulatory system and respiratory system, the immune system keeps out unwanted viruses and bacteria to keep you healthy.
- 11. Pathogens- Causes agents , such as bacteria and viruses Infectious- Pathogens passed on Cancer- Cells reproduce uncontrollably Noninfectious-Cannot pass among each other Pasteurization-High temperature that kills bacteria Vector- Does not develop disease.
- 12. Why is your skin considered a first line defense ? Your skin is considered a first line of defense because of natural oils that make your skin waterproof so you can wash it off easily. How does the respiratory system trap pathogens? Cilia in the respiratory system traps them and brings them up.
- 13. What is inflammation ? A process that causes the area to become red and swollen How doe immunity develop ? Immunity can be developed through different processes. If you have immunity to a particular pathogen, you will experience little or no effect from exposure to that pathogen.