Understanding Diseases. Chapter 8 Lesson 1. Focus Question. What are pathogens and how do they react in my body?. Understanding Diseases. A communicable Disease is an illness caused by pathogens that can be passed from one person to another person, animal or object.
Chapter 8 Lesson 1
What are pathogens and how do they react in my body?
Soap or alcohol-based hand rub kills the flu virus. When water is
not available, alcohol-based hand rubs may be used. It’s especially
important to clean your hands:
• After wiping or blowing your nose or coughing or sneezing;
• After using the bathroom;
• After being in contact with or being near someone who is ill;
• After touching handrails, doorknobs, telephones or other
things handled by many people;
• Before and after eating or drinking;
• Before handling food, especially ready-to-eat foods like salads
and sandwiches; and
• After handling garbage or trash
First line of defense:
Lymph plays an important part
It bathes cells and cleans them of foreign organisms.
Lymph nodes filter the lymph.
Lymph contains lymphocytes
B-Cells- make T cells
T-Cells- destroy infected cells
Killer Cells- kill pathogensThe Immune System’s Specific Response