LYMPHATIC Flashcards
3 functions of lymphatic system
drain excess interstitial fluid
transports dietary lipids
carries out immune response
are lymphatic capillaries larger and more permeable then blood capillaries
yes
they absorb larger molecules like proteins and fats
how to enter a lymph vessel (3 ways)
elastic anchoring filaments
increase in pressure
increase permeability
what are the 2 enabling pumps
respiratory pump - from breathing
muscle pump - comes from calf muscles, walking, calf raises
how is the respiratory pump maintained
by pressure changes during inhalation
diaphragm contracts = increased pressure in abdominal cavity
how does the skeletal muscle pump work
milking action of skeletal muscles
compress lymphatic vessels and force lymph upwards
where do B cells originate and mature
bone marrow
where do T cells originate and mature
originate = bone marrow
mature = thymus
what drains the lungs
bronchiomediatic
what does the lymphatic system consist of
fluid
vessels
tissue
organs
red bone marrow
what pulls on endothelial cells to increase permeability
anchoring filaments
what are lacteals
specialized lymphatic capillaries in guts for fat transport and absorbs fat
flow of lymph
CVTD
starts: blood capillaries into interstitial space into lymphatic capillaries into
VESSELS
TRUNKS
DUCTS
back into blood stream via jugular and subclavian veins
where does the left side of the head drain to
left thoracic duct
what does the bronchomediastinal trunk drain
LUNGS
heart
thoracic cavity
what are the primary lymphatic organs
red bone marrow
thymus
where do stem cells divide and turn into immune cells
primary organs
thymus, red bone marrow
what does the right duct do
drain the right upper body and head
where do immune responses occur
secondary lymphatic organs
lymph nodes
spleen
lymphatic nodules
what is the cisterna chyli
origin of LEFT thoracic duct
collects lymph form lumbar and intestinal trunks
what cells have the ability to morph into other cells & where are they produced
pluripotent
produced in red bone marrow
what are the regions of a lymph node and what cells are in each
outer cortex - B cells
inner cortex - T cells
medulla- B cells
what cells are in the outer cortex
B cells in lymphatic nodules
what cells are in the inner cortex
T cells and dendritic cells