Function of the Lymph Nodes and Spleen Flashcards
where are fetal haematopoietic stem cells made?
liver
name primary lymphoid tissues
bone marrow
thymus
name secondary lymphoid tissues
lymph nodes spleen waldeyers ring (tonsils) GI tract BM
how are the spleen and lymph nodes similar?
both filter circulatory fluids
both locations of immune cells
leakage of lymph into the peritoneal cavity is called…
chylous ascites
describe the appearance of chylous ascites
milky
lipid rich fluid
how does the lymphatic system ensure direction of flow?
valves
what area of the lymph node do afferent lymph channels drain to?
peripheral sinus
what is the cisterna chyli?
dilated sac at the lower end of the thoracic duct that drains lymph from the lumbar/instestinal lymphatic systems
what are germinal centres?
locations in 2ndary lymphoid organs eg LNs/spleen where B cells mature and proliferate
the thoracic duct drains what side mainly? what does it drain?
left
left head/neck/thorax
all lymph below diaphragm
what trunks primarily drain lymph from the upper body?
jugular trunk
subclavian trunk
bronchomediastinal trunk
where in the lymph node would you find plasma cells?
medullary cords
signs of lymphangitis?
red lines extending from an inflamed lesion
generalised lymphadenopathy suggests what?
systemic inflammatory process
widespread malignancy
