Immune System Flashcards
7th grade review
Small organisms that cause illnesses when they enter the body
pathogens
Pathogens can enter the body through
nose, mouth, eyes or cuts in skin
signs that our body is fighting off pathogens such as fever, runny nose, cough, or vomiting
symptoms
This is the first line of defense against pathogens
skin
Produces an oil that has bacteria killing properties
skin
Leak fluid into the body tissues
lymph vessels
filtered by the lymph nodes before returning to the blood
lymph fluid
These filter lymph and fight bacteria and help respond to cancer cells
lymph nodes
Located in the neck, armpits and groin
lymph nodes
two small organs at the back of the throat that filter out germs and contain white blood cells
tonsils
an organ the size of a fist that is located behind your ribs on the left side near your stomach
spleen
Removes red blood cells that are too old or damaged and contains white blood cells which are released to fight pathogens
spleen
controls how many red blood cells, white blood cells, and clotting platelets are in the body
spleen
Found in the center of most bones
bone marrow
Produces special cells called stem cells that can grow into red blood cells, white blood cells or platelets
bone marrow
located in the upper chest between the lungs
thymus
produces special white blood cells called T cells that attack and remember specific germs and makes sure the body doesn’t attack itself
thymus
Can you live without your thymus, spleen or tonsils
yes
liquid that circulates throughout the body and carries pathogens to lymph nodes where they are destroyed
lymph
specialized cells that move through the blood stream and attack pathogens within the body
white blood cells
tissue inside of bones that produce red blood cells, white blood cells and platelets
bone marrow
blood filters through these where an infection might be detected
spleen or lymph nodes
If a germ enters the body through a cut in the skin, platelets will clot and form a
scab
when a weakened pathogen or parts of a pathogen are introduced into the body to train the immune system to recognize the pathogen
vaccine
a part of a pathogen
antigen
produces excess mucus to force pathogens out of the body
runny nose
The body elevates its temperature to kill off bacteria or viruses
fever
This is a way the body tries to force pathogens out of the lungs
coughing and sneezing
When harmful substances enter the digestive system and the contents of the stomach are removed from the body
vomiting
A collection of dead white blood cells and dead pathogens from an infection
pus
