Use the drop down menus to match the structure to its definition.


✔ tonsils
Two oval shaped tissues at the back of the throat that prevent infection by trapping pathogens that enter the nose and the mouth.

✔ spleen
An organ near the stomach that filters blood, stores red blood cells, destroys old red blood cells, and contains lymphocytes.

✔ adenoids
Spongy tissues at the back of the nasal cavity that prevent infection by trapping pathogens that enter through the nose.