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Chapter 15
Anatomy - - The Lymphatic System and Immunity
| Question | Answer |
|---|---|
| Lymph | Is fluid formed in the tissue spaces |
| Lymphatic vessels | Transport lymph to reenter the circulatory system |
| Interstital Fluid (IF) | Liquid filtered out of the capillaries into microscopic spaces between tissue cells |
| Lymphatic Capillaries | Network of tiny blind ended tubes distributed in the tissue space. |
| Right Lymphatic Duct | Drains lymph from the upper right quarter of the body |
| Thoracic Duct | Drains lymph from three quarters of the body |
| Cisterna Chyli | Large pouch like structure of the thoracic duct in the abdomen that serves as a storage area for lymph |
| Lacteals | Lymphatic capillaries in the wall of the small intestine - they transport fat obtained from food to the bloodstream |
| Lymphedema | Abnormal tissue swelling because of accumulation of lymph. |
| Lymphangitis | Vessel inflammation charaterized by thin red streaks extending from an infected region. (Blood poisioning) |
| Elephantiasis | Caused by parasitic worms that block the flow of lymph |
| Lymph Nodes | Filters lymph |
| Lymph Nodes perform what two important immune functions? | Defense and white blood cell formation |
| Afferent Lymphatic vessels | Where lymph enters the node (4 entrances) |
| Efferent Lymphatic vessel | Where lymph exits the node (1 exit) |
| Lymphadenitis | Swelling and tenderness of the nodes in the elbow and axillary regions |
| Two types of Lymphoma are? | Hodgkin disease and non-Hodgkin lymphoma |
| Thymus | Small lymphoid tissue organ located in the mediastinum |
| Thymosion | Hormone secreted by the thymus |
| Palatine tonsils are located? | In the mouth on each side of the throat |
| Pharyngeal tonsils are located? | Are located at the back of the roof of the mouth |
| Lingual tonsils are located? | near the base of the tongue |
| Tonsillitis is? | Chronic infection of the tonsils |
| Spleen | Filters the blood from bacteria and other foreign substances, destroys worn out RBCs and salvages iron found in hemoglobin for future use, and serves as a reservior for blood. |
| Splenomegaly is? | Abnormal spleen enlargement |