Lymphatic System Flashcards
List the main components of the lymphatic system
-Lymph Vessels, Lymph Nodes, Spleen, Tonsils, Thymus
Describe the function of the above components
- Drain fluid & protein, transport fats
- make lymphocytes (immunity) of which B lymphocytes transform into plasma cells that make antibodies that fight infection.
Define Lymph
-Similar in composition to interstitial fluid, but in the lymph vessels.
Describe the general pathway of lymph from tissue fluid to the main ducts
-Lymph capillary, lymphatics, thoracic duct (lower body) or Right lymphatic duct (R. upper body) to venous system
The thoracic duct collects lymph from what parts of the body, and empties into what vein
-Thoracic duct drains left upper body and all of lower body & dumps lymph into the junction of L. internal jugular and L subclavian veins.
the right lymphatic duct collects lymph from what parts of the body, and empties into what vein?
-R. Lymphatic duct collects lymph from right upper body and empties into the junction between right internal jugular and right subclavian veins.
List the 3 tonsils. Which ones are most commonly removed surgically?
- Palatines (most commonly removed)
- linguals
- pharyngeal
Describe the location and function of the thymus gland and the spleen
- Thymus is above the heart in the mediastinum and makes T lymphocytes that function in immunity. It is unique in that it is replaced by connective tissue in adults.
- The spleen is inferior to the stomach and has red pulp where RBCs are stored and old ones are destroyed and white pulp where lymphocytes are made and microorganisms are “eaten” by phagocytes.
Describe the purpose and location of lymph nodes
-Numerous locations along the lymphatics & they function to filter the lymph. This is a battleground for fighting infection and lymph nodes also make lymphocytes that fight infection & function in immunity.
