Lymphatic System

2. signs of this include heat, pain, redness, swelling and loss of function
4. the most abundant white blood cells
6. toxin or foreign substance that produces an immune response
8. when the immune system attacks healthy cells
9. prevent the backflow of fluid
11. formed when blood plasma leaks out of the capillaries and is picked up by lymphatic capillaries
12. acquired immunodeficiency syndrome
13. this organ is responsible for filtering blood
15. responsible for filtering lymph and removing pathogens and cellular debris
16. immunity attained when antibodies are introduced through and external source such as the placenta or breast milk
17. life threatening condition caused by the body's extreme response to an infection
18. specialized B-cells that remember antigens

1. immunity attained when the body is exposed to a pathogen and creates antibodies after exposure
3. these filter pathogens and debris trying to enter the body through the nose and mouth
5. lymph is made up mostly of this
7. the point where the lymphatic system dumps lymph back into the circulatory system
8. immune system is hypersensitive and overreacts to harmless substances
10. occurs when the immune system is hypersensitive to harmless substances
13. contraction of these move lymph along through the body
14. binds to a specific antigen to fight a threat