Flashcards in Class 12: Lymphatic System Deck (99)
function of lymphatic and immune systems
-maintain fluid balance
-protect body from infection and disease
fluid recovery means
fluid continually filters from the blood capillaries into the tissue spaces
lacteals are located
in the small intestine
dietary lipids that are not absorbed by the blood capillaries
lymph is similar to.. but has much less...
what is drawn into the lymphatic capillaries?
lymphatic capillaries are....
sacs of thin endothelial cells
lymphatic capillaries are closed...
at one end
what opens the valve-like flaps in lymphatic capillaries?
interstitial fluid pressure
lymphatic vessels have an outer layer called
tunica media is
middle layer of lymphatic vessels
tunica interna is comprised of...
endothelium and valves
right lymphatic duct gets lymph from
right arm, right head and thorax
right lymphatic duct drains into
right subclavian vein
thoracic duct begins where... called what?
in abdomen, cisterna chyli
thoracic duct empties into...
left subclavian vein
lymph flows how compared to venous blood
lower pressure and slower speed
skeletal muscle pump aids flow of...
arterial pulsation is..
rhythmic squeezing of lymphatic vessels
thoracic pump aids flow from...
abdominal to thoracic cavity
types of lymphatic cells
natural killer cells are responsible for...
b lymphocytes when activated cause...
proliferation and differentiation into plasma cells that produce antibodies
all lyphocytes originate in the
red bone marrow
t-cell precursors travel to...
thymus to specialize into t-cells
b-cells originate in...
red bone marrow
b-cells migrate to the...
spleen and lymph nodes
primary lymphatic organs are...
red bone marrow and thymus
secondary lymphatic organs are
lymph nodes, tonsils, and spleen