Lymphatic System Flashcards
Lymphatic system
vast collection of cells and biochemicals that travel in lymphatic vessels.
L.S helps
circulate bodily fluids (C.S)
L,S second function
enables us to live in world with different organisms
Lymph capillaries
micr closed ended tubes that allow fluid to enter
lymphatic vessels
like veins, prevent backflow of lymph
lymph nodes
vessels drain into the nodes
lymphatic trunks
drain lymph from L vessels
Thoracic duct
collects lymph from lower limbs abs left side of body head and neck
Right Lymphatic Duct
lymph on right side of body
Order of lymph movement
capillary affarent vessel node efferent vessel trunk collecting duct subclavian vein
Removing Lymphatic tissue
can obstruct drainage from the upper limb, causing edema
Lymph nodes contain
B and T cells and macrophages
hilum
lymphatic vessels leading to a node
tonsils
partially encapsulated lymph nodes
1st function of Lymph nodes
filtering harmful particle from blood stream
2nd function of Lymph nodes
monitoring body fluids
thymus
soft bilobed gland enclosed in connective tissue and located anteriorly of the aorta and posterior to the upper sternum
T lymphocytes
leave thymus and provide immunity
spleen
R.B.Cs die here
innate defense
simple defense that protects against many pathogens
adaptive defense
specific targets specific pathogens
chemical barrier
enzymes gastric acid due to low PH
interferons
Lymphocytes and fibroblasts produce this in response to virus or tumor cells
block replication
pus
WBC bacteria and damaged tissue
immunity
third line of defense
antigens
proteins located on cell surface
antigen-presenting
Tcell activation requires presence of processed fragments of antigen attatched to the surface of another type of cell,
imunoglobins
globular plasma protein that functions as an antibody
IgC
in plasma and tissue fluids and is particularly effective against bacteria, viruses, and toxins. It also activates as a compliment.
IgA
found in exocrine gland secretions. found in breast milk, tears, and urine.
IgE
associated with allergic reactions
Anaphylictic shock
allergic reaction
bust out in red hives
injection of epinephrin
autoimmunity
body attacks itself because of unfamiliar antigens
streptococcus bacteria
triggers inflamation of heart valves
largest lymph vessel
thoracic duct
lymph rejoins blood and becomes art of the plasma in the
right and left subclavian veins
tissue fluid originates from
blood plasma
movement of lymph is because of
muscle contraction
chemotaxis
attraction of macrophages in area
B and T cells
2nd immune response
Red blood cells
do not present their antigen
Haptens
partial antigens, combines with something fo reaction
thymus
degenerates through life
T cells
recognize antigens not cells
lymph flow
to the heart
