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Biology
Last minute section 5
| Question | Answer |
|---|---|
| What do phagocytes do to pathogens? | Engulf and then digest them |
| What to lymphocytes produce? | Antibodies |
| What do antibodies do? | Lock on to invading pathogens, marking them for destruction |
| Along with antibodies, what else is produced in response to a foreign antigen? | Memory cells |
| Why do artery walls have to be strong? | They pump blood at high pressure |
| What makes artery walls strong? | Thick layers of muscle |
| What about a capillaries walls help with diffusion? | They are permeable |
| How thick are capillary walls? | One cell thick |
| Are the lumen bigger in arteries or veins? | Veins |
| What do veins have that prevents the back flow of blood? | Valves |