DAT Lymphatic System Cheat SHeet Flashcards
function of lymphatic system
Acts as a secondary circulatory system by transporting and filtering interstitial
fluid (lymph)
system Responsible for returning tissue
fluid to the blood
system monitors the body for…
pathogens
can replenish
lymphocytes
central lymphoid system
Site of T-cell
maturation
thymus
(individuals
without a functioning
thymus will lack
functioning t cells
Produces
lymphocytes
bone marrow
CANNOT replenish lymphocytes
Peripheral Lymphoid Tissues
]Contain leukocytes that filter
lymph and can initiate an immune response
lymph nodes
Filters blood as it passes through
spleen
Mass of lymphatic tissue that
inspects incoming food and air for pathogens
adenoids
Contains lymphoid tissue that helps
destroy bacteria before they breach the
intestinal wall during absorption
appendix
Large aggregates of lymphoid
tissue in the small intestine
Peyers patches
components of lymphatic syste
lymph, lymphatic capillaries
Fluid that starts as blood plasma forced out of capillaries
lymph
lymph is also
known as
interstitial fluid before it is absorbed into the lymphatic vessels)
Thin-walled vessels that collect excess interstitial fluid and
other substances from the tissues and transport them to the lymphatic vessels
lymphatic capillaries
An obstruction (e.g., a tumor pressing against a lymph vessel) can
lead to
swelling and edema
swelling that can further constrain blood flow
edema
Swelling occurs because
fluid pools in the tissue instead of being
taken back to circulation
Used to detect cancer and
determined where the
cancer cells have traveled
lymph node biopsy
Interstitial fluid floating between cells is absorbed by
lymphatic capillaries
where are the lymphatic capillaries where interstitial fluid is absorbed
end of lymphatic vessel
Movement of the lymph is assisted by
one-way valves,
skeletal muscle contraction, and smooth muscle lining
Lymphatic capillaries drain lymph wehre
all over the body, with a few exception
where is lymph absent from
(absent from bones, bone
marrow, teeth and the CNS)
Lymph is ultimately returned to…
the blood
