Chapter 26. Chapter 26: Immunity and Health
Review & Rehearse
Review & Rehearse
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You must read each slide, and complete any questions on the slide, in sequence.
Instructions
Review the visual summaries and answer the essay questions below.
Make sure to enter a brief response that completely answers each question and explains your reasoning. When you click "Submit," you will be provided instant feedback, allowing you to check if your response is correct.
(This activity contains 12 total essay questions. Each new question will be revealed once you complete the preceding question.)
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1. Describe the three general ways in which the immune system combats pathogens.
The immune system has three basic parts: physical barriers, non-specific immunity, and specific immunity. Physical barriers (including skin and mucous membranes) and non-specific immunity (the non-specific immune system cells) are the first lines of defense, serving to distinguish a substance as a pathogen and provide some initial protection. Cells of the specific immune system recognize and combat individual pathogens and remember them, so that the body can fight them more effectively in the future.
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