| A | B |
| Lymph Capillaries | smallest pipes of the lymphatic system, they run parallel to blood capillaries |
| Lymphatic Fluid/Lymph | fluid that runs through lymph capillaries (mostly water) |
| Lymphatic Vessels | fed from lymphatic capillaries |
| Lymph Nodes | what vessels empty into |
| Lymphocytes | white blood cells in lymph nodes |
| Lymphatic Sinuses | surrounds lymphatic tissue & is filled with lymph fluid |
| Lymphatic trunks | where lymphatic vessels that are exiting the lymph nodes go |
| Thoracic Ducts | largest lymph vessel |
| Right Lymphatic Duct | formed by the union of the right jugular lymphatic vessel and vessels from the lymph nodes of the right upper extremity, thoracic wall, and both lungs; lying on the right side of the root of the neck |
| Tonsils | Palatine, located on either side of the pharynx; Adenoids, rear of nasal pharynx; Lingual, base of tongue |
| Spleen | Spongy sac-like mass of lymphatic tissue in the upper left quadrant of the abdomen |
| Thymus | soft organ located between the aortic arch and the sternum |
| Antigens | distinguish friend or foe by self recognition or non-self recognition |
| Innate/Natural Immunity | body's inborn ability to fight infection |
| Leukocytes | white blood cells |
| Cytokines | stimulate immune response |
| Interferon | cytokine produced cells infected by a virus |
| Tumor Necrosis Factor | causes cell death in cancer cells |
| Interleukins | molecules that create cytokines |
| Inflammation | burning, swelling, redness, pain |
| Histamine | chemical sent out when tissue is damaged |
| Neutrophil | detect foreign antigens |
| Macrophages | destroy infected cells by phagocytosis |
| Cytotoxic | cell death |