Studied by 38 peopleimmunology
the study of the immune system (system that protects the body from foreign invaders)
immune system
system that protects the body from foreign invaders
pathogen
any organism (bacteria, fungi, virus, etc.) that can cause a disease
white blood cells (leukocytes)
the most important part of the immune system
phagocytes
WBC that attack and dispose of pathogens
lymphocytes
fight infected cells; secrete germ-fighting antibodies in the bloodstream
histamine
a chemical “alarm” issued when a pathogen invades the body; causes inflammation of nearby tissue
antibodies
protein molecules that travel to the bloodstream
antibodies
can fight pathogens by inactivating them or marking them for destruction
lymphatic system
the chambers of the body that transport the white blood cells throughout the body
tissue fluid
a liquid that helps maintain water content throughout the body
lymph capillaries
fill in the blank
excess fluid will pass through small tubes called ________ _____________
lymph
fill in the blank
once tissue fluid enters the capillaries, it's called _________
lymph
fill in the blank
pathogens in the body are picked up and carried by ________
vessels
ducts
fill in the blank
body movement forces lymph to move throughout the body in lymph __________ and lymph _______
lymph nodes
small organs scattered throughout the lymphatic system; “bases” for WBC
nodes
fill in the blank
pathogens are cleansed from lymph when it passes through the _______
tonsils and adenoids
lymph tissue in the throat
peyer’s patches
lymph tissue in the intestines
spleen
largest lymph organ of the body
fever
high body temperature that prevents pathogens from multiplying and speeds up white blood cells
bone marrow
produces WBC
liver
filters toxins from the body; can fail due to alcohol consumption
skin
fill in the blank
unbroken ________ prevents the majority of pathogens from entering the body
Note 
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