Lymphatic System Flashcards
Intracellular fluid
2/3 of total body fluid…found inside cells
Extracellular fluid
1/3 outside cells containing interstitium blood and lymph
obligatory load
lymphatic system is obliged to pick up and return to cardiovascular system Filtrate which includes fluids, proteins, lipids, cells and other substances
Lymph
Interstitial fluid is lymph once absorbed by lymphatic vessels
Lymphocytes
Specialized white blood cells
Lymph vessel network
begins with microscopic capillaries alongside larger enmeshed cardio capillaries. Interstitisal fluid enters these capillaries and progresses into larger capillaries, primary lymphatic vessels, into the lymph nodes, then larger vessels into trunks and ducts. Finally into subclavian veins to return to cardivasculare flow.
Lymph Capillaries
Pre collectors
Collectors vessels (primary vessels for lymph transportation and functional unit is called an angion).
Lymph trunks and ducts
Lymph Nodes
Lymph node beds
Cisterna Chyli
bulge at base of thoracic duct just below diaphragm is the passive collecting well for lymph from lower extremities.
Lymph nodes
lymphoid organs function as filters for lymph fluid and also contain immune cells. Interspersed along the lymph pathway 600 to 700 nodes.
anastomosis
precollector capillaries arranged end to end. No valves to lymph can flow in either direction
anchor filaments
holds initial vessels open in intersitial space by pulling on the flaps of epithelial cells outward
angulus venosus
Lymphovenous Junction between lymphatic and cardiovascular divisions of circulation
catchment
Lymph nodes clustered together in beds. This area catches /collects lymph and slows rate of flow
lymphedema
edema caused by lymphatic system
watershed
area between lymphotomes where due to anastomoses allows lymph to flow in either direction
pre-lymph channel
each oerson has unique pattern formed by repeated flow of interstitisal fluid toward vessels Think rivulets of river water
