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Transcript
Immune System Reading Assignment Integrated Science 2 Name: Per: Part 1. The Immune System Read pages 1030-1036 in the Integrated Science Book and answer the following questions. 1. The body’s main defense against pathogens is the ___________________________________. 2. What is the job of the body’s first line of defense? ____________________________________ ________________________________________________________________________________ ________________________________________________________________________________ 3. List the four components of the body’s first line of defense. ___________________________ ________________________________________________________________________________ ________________________________________________________________________________ 4. How does mucus help protect the body from disease?________________________________ ________________________________________________________________________________ ________________________________________________________________________________ 5. Body secretions contain an enzyme, called ________________________ , that kills bacteria. 6. When does the body’s second line of defense come into play? _________________________ ________________________________________________________________________________ ________________________________________________________________________________ 7. White blood cells called __________________________________engulf and destroy bacteria. 8. Why does an increase in the number of white blood cells indicate that the body is dealing with a serious infection? __________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ 9. An elevated body temperature is called a(an) _______________________________________ 10. Circle the letter of each sentence that is true about elevated body temperature. a. It kills many pathogens. b. It speeds up the action of white blood cells. c. It decreases heart rate. d. It slows down chemical reactions 11. What is the immune response? ____________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ 12. A substance that triggers the immune response is known as a(an) ______________________ 13. What are some examples of antigens? ______________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ 14. List the two different immune responses. ___________________________________________ 15. A protein that helps destroy pathogens is called a(an) ________________________________ 16. What happens once the body has been exposed to a pathogen? ________________________ ________________________________________________________________________________ ________________________________________________________________________________ 17. Circle the letter of each sentence that is true about cell-mediated immunity. a. It is a defense against the body’s own cells. b. It involves killer T cells. c. It involves antibodies. d. It causes pathogen cells to rupture and die. 18. What is a vaccination? __________________________________________________________ _______________________________________________________________________________ 19. How do vaccines work? _________________________________________________________ _______________________________________________________________________________ _______________________________________________________________________________ In the space below, recreate the sketches on pages 1031 and 1034, illustrating different functions of the immune system. Include labels and brief descriptions. 2