1. #39 Warm UP
How do you think our immune system fights pathogens like bacteria and viruses?
SWBAT explain how the immune system attacks and protects against pathogens by watching a video and making a graphic organizer
Standards:. 5.2a Homeostasis in an organism is constantly threatened. Failure to respond effectively can result in disease or death.
5.2b Viruses, bacteria, fungi, and other parasites may infect plants and animals and interfere with normal life functions.
5 MIN
Take a new Warm UP stamp sheet

2. What is disease?
Disease: any change, other than injury, that disrupts the normal functions of the body
Causes of disease:
Inherited from parents
Materials in environment
Personal behavior/nutrition
Pathogens (bacteria, fungus, viruses)
Pathogens: invade your body
infectious diseases can spread from person to person

3. Video Watch for the ways that our bodies responds to pathogens
Fill in your vocab sheet with information from the video

4. How does the body defend against germs?
Pathogen gets past these defenses
first line of defense: skin, tears, saliva, mucous, stomach acid
White blood cell ↑
Body temperature↑ (fever)
Antigens on the surface of pathogen are recognized and trigger response
Pathogen gets past these defenses

5. Specific Immune Response
B-cells make antibodies that bind to the antigen
Macrophages engulf clumps of bacteria or virus
T-cells help the B-cells or kill infected cells
Mobilization
Attack
Recognition
Immunity

6. Immune Response

7. Steps of Immune Response
Antigens on surface of pathogen are RECOGNIZED
The pathogen is then MARKED with antibodies
The pathogen and/or infected cells are ATTACKED (lysed or engulfed)
The body keeps MEMORY cells for future invasions

8. Immunity
Vaccines are weakened or mild forms of pathogens that are injected into the body
Body builds up antibodies to prepare for future attack
EX: Measles, mumps, polio, flu
Maternal Immunity
Antibodies from mother are passed through breast milk to baby

9. Activity – Graphic Organizer
Use pages 531 in the text to help you fill in the graphic organizer.
Explain what is happening at each step.
Illustrate key terms and actions to help you remember what they mean. Examples:
Engulf
Antigen
Antibodies
25 Minutes
Extension:
Finish Vocabulary! - DUE DECEMBER 23rd

10. Regents Practice

11. Regents Practice

12. Regents Practice

13. Summary
Let’s review the answers to the Reading Comprehension

14. REGENTS PRACTICE Reflection How does the body fight against pathogens?
How do vaccines work?
HOMEWORK
DUE 12/23
VOCABULARY
5 minutes
Give students a few minutes to think about the question.
Remind them that there is no right answer and encourage them to explain it in their own words.
Check task sheet while they are writing.
Call on 2-3 students to volunteer answers.
HOMEWORK
Workbook pgs
Study Island Body Systems and Homeostasis Assignment
Practice Sheet