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lymphatic system (Major functions of the Lymphatic & Immune systems…
lymphatic system
Major functions of the
Lymphatic & Immune systems
return clean fluids and leaked proteins back to the blood
drain rest of the fluid from the tissue
play an essential role in body defenses and resistance to diseases
protect the body from foreign invaders
Anatomy of the lymphatic system (including vessels, nodes, MALT, spleen and thymus)
vessels
walls overlap to form a flap
interstitial fluid leak lymph into capillaries
nodes
scattered along collecting vessels
MALT
mucosa associated lymphatic tissue
protects digestive and reproductive tract
Spleen and thymus
located on left side of abdomen next to stomach
filters blood
destroys worn out cells
act as blood resevoir
disorders of the Immune system
Rheumatoid arthritis
Asthma
Diabetes type 1
Innate/natural immune defenses and Adaptive/acquired immune defenses
specific
only found in vertebrates
consists of antibodies and lymphocytes
humoral response and the cell mediated response
tailoring of the response to the particular foreign invader
waits to attacm
created in response
non-specific
first line of defense
physical, chemical and cellular defenses against pathogens
responds immediately
already in the body
humoral vs. cellular response
humoral
Antibodies produced by the B cells
bind to antigens
cellular
occurs inside infected cells
mediated by T lymphocytes
antigens and antibodies
antigens
capable of stimulating an immune response
distinct surface features
antibodies
Y-shaped proteins produced by B cells
response to exposure to antigens