| A | B |
|---|
| lymph nodes | also called lymph glands; clean and filter lymph that flows through them |
| nodules | subunits of lymph nodes that make lymphocytes |
| afferent lymphatic vessels | vessels that flow into lymph nodes |
| efferent lymphatic vessels | vessels that flow out of lymph nodes |
| palatine tonsils | on each side of oral cavity and the pharynx (throat) |
| pharyngeal tonsils | also called adenoid; back wall of the nasal cavity |
| lingual tonsils | located on the back of the tongue |
| spleen | largest lymphatic organ; located behind the stomach; cleans and filters blood, lymphocytes and macrophages destroy pathogens |
| thymus | located in mediastinum; maturation of T lymphocytes |
