Lesson 12.4 Defense

Vocabulary pathogen immunity inflammation active immunity antigen vaccination antibody passive immunity

Essential Questions How do the parts of the immune system work together? 1 How does the immune system interact with the other body systems? 2

a substance that causes an 12. 4 Vocab 1. active immunity: when the body produces antibodies in response to an antigen 2. antibody a protein that attaches to an antigen and makes it useless 3. antigen a substance that causes an immune response 4. immunity the resistance to specific pathogens 5. inflammation a process that causes an area to become red and swollen

the introduction of antibodies that were produced outside the body 6. Passive immunity the introduction of antibodies that were produced outside the body 7. pathogen a disease-causing agent 8. vaccination weakened or dead pathogens placed in the body, usually by injection or by mouth

Fill in the information on your hand-outs. barriers immune immune system non-specific non-specific skin

Fill in the information on your hand-outs. soap nose respiratory Mucus

Fill in the information on your hand-outs. stomach Fill in the information on your hand-outs. digestive system circulatory nervous white chemicals proteins Inflammation inflammatory

Fill in the information on your hand-outs. specific antigen pathogen antibodies B cells antibodies T cells cell membrane allergy

Fill in the information on your hand-outs. immunity active immunity vaccine antibodies passive immunity homeostasis respiratory