Lymphatic System Flashcards
The lymphatic system functions to (3)
1)drain interstitial fluid 2)transport dietary fats 3) carry out immune responses
Lymphatic capillaries merge to form BLANK which have BLANK
lymphatic vessels which have thin walls and many valves
Lymphatic vessels/lymphatics do what
return interstitial fluid and leaked plasma proteins back to blood
once interstitial fluid enters lymphatics it is called
lymph
lymphatic vessels are also called BLANK end vessels
dead end
lymphatic capilaries are made of
simple squamous epithelal lining
from lymphatic vessels, lymph passes through BLANK and then into BLANK
lymph nodes and then into lymph trunks
lymph trunks include
lumbar, intestinal, bronchomediastinal, subclavian and jungular trunks
lymph trunks merge to form
either the thoracic duct (left) or right lymphatic duct
what connects the immune system to the lymphatic system
lymph nodes
which lymph duct is larger
left/thoracic
left/thoracic duct drains
left upper side and both lower extremeties
right thoracic duct drains
right upper extremities and head
Lymph nodes serve as the
check point for cells and foreign invaders
the lymph ducts empty lymph into
the junction of jugular and subclavian veins of the cardiovascular system
afferent lymphatic vessels
carry lymph from capillaries to nodes
lymphatic capilaries
absorb interstitial fluid and pass lyph to afferent lymphatic vessels
lymph nodes do 2 things to cells
1) destroy cells immediately 2) take parts of foreign invaders to build army against it
lymph is propelled by (4)
skeletal muscle contraction, presure changes in thorax during breathing, valves to prevent backflow, pulsation of nearby arteries
primary lymphatic organs
1) red bone marrow 2) thymus
which cell stays in bone marrow
B cells
in the thymus, cells learn
self tolerance: not to destroy cells, immunocompetnece ability to recognize and bind to proteins - self tolerance comes before immunocompetence
secondary lymphatic organs and tissues
lymph nodes, spleen, lymphatic nodules
which cells migrate from the bone marrow to the thymus
T cells
where do cells become immmunocompetent
in the thymus
what happens in the spleen
red blood cell recycling
what happens in the lymphatic nodues
second line of defense where we filter for pathogens and screen blood
principal lymphoid organ of the body
lymph node
lymph nodes are embedded
in connective tisssue in clusters along lymphatic vessels.