1. Lesson 12.4
Defense

2. Vocabulary pathogen immunity inflammation active immunity antigen
vaccination
antibody
passive immunity

3. 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

4. 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

5. 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

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

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

8. 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

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

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