Lymphatic system Flashcards
What is interstitial fluid?
plasma leaving capillary to flow to tissue
function of interstitial fluid?
exchange of nutrition & waste betwen cell and fluid
what happens to the interstitial fluid after completing fucntion
1-90% goes to veins
2-10% enters lymph cappilaties
Components of lymph system
1-Lymph
2-Lymph capillaries
3-Lymphatic vessels
4-“ cells
5-“ ducts
6-“ nodules
7-Lymph nodes and lymph organs
Lymph ( fluid) similar to what? formation depends on?
1-plasma
2depends on tissue fluid
how much plasma fluid escape capillaries to tissue per day
20 liters
How much of that 20 liters become lymph
3-4
Disappearance of lymphatic system lead to
1-tissues waterlogged
2-blood volume falls= cardiovas fails
Attributes of lymphatic vessels
1-blind-ended
2-unidirectional
3-absorptive
functions lymphatic vessels
Transports:
1-interstitial fluid
2- immune cells
3- macromolecules
to lymph nodes
process of lymphatic system leads to
maintenance of
1-ECF pressure
2-ECF volume
Functions of lymphatic system
1-Removal of large molecules
2-Immunity by lymphocytes & filteration of microorganisms
3-Absoberation of fat& fatty vitamins from digestive sys.
What disturbs lymph flow?
lymphatic tissue removal/obstruction/destruction
if lymph doest drain normally what happens?
lymph swelling/ lymphedema
Lymphatic circulation, in order
1-interstitial fluid
2-lymph capillary
3-afferent vess
4-lymph nodes
5-efferent vess
6-lymph trunks
7-lymph duct
8-venous system
Lymphatic capillaries location
nest blood capillaries in tissue
structure of lymphatic capillaries
1-single layer of overlapping endothelium
2-one-way valve for interstitial fluid
3-more permeable
lymphatic capillaries not in?
1-epithelia
2-cartilage
3-brain
4-spinal cord
5-bone marrow
three layers of lymph vessels
1-tunica inima
2-tunica media
3-tunic externa
lymph vessels are similar to
veins but thinner, conatin more valves
lymph vessels have
lymph nodes at intervals
arrangements of lymphatic vessels
1-superficial w veins
2-deep with arteries
what does large lymph vessels do
pass through nodes &merger becoming trunks
What drains head & neck
R&L jugular trunks
