| A | B |
|---|
| Red Bone Marrow | produces B-cell lymphocyes, a type of WBC |
| Thymus gland | acts as a boot camp for lymphocytes, turning them into T-cells |
| Spleen | a dark purple organ that stores blood cells, destroys old RBCs and platelets |
| Lymph Nodes | bean-shaped structures that store and filter lymph |
| Tonsils | found in the throat, protects against inhaled pathogens |
| Peyer's Patches | found in the intestines, protects against ingested pathogens |
| Vermiform Appendix | attached to the large intestine, helps to fight pathogens and other bodily intruders |
| Lymph Capillary | smallest lymph collection vessel |
| Afferent Valve | one-way valve that opens into a lymph node from a vessel |
| Subclavian Veins | point where the lymphatic system meets the circulatory system |
| Efferent Valve | one-way valve that opens out of a lymph node, into a vessel |
| Right Lymphatic Duct | drains lymph from the R arm, R side of head & R side of thorax |
| Thoracic Duct | drains entire body except R arm, R side of head/thorax |
| Natural Immunity | non-specific responses to invading pathogens |
| Acquired Immunity | specific responses to invaders using specialized lymphocytes |
| Lymph | the fluid of the lymphatic system |
| Cisterna chyli | The thoracic duct begins here, deep in the abdomen (between the abdominal aorta and L2) |
| MALT (Mucosal-associated lymphoid tissue) | collection of lymphoid cells or nodules in the mucosa or submucosa of the digestive tract |
