click below
click below
Normal Size Small Size show me how
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 |