Vocab
This is the body system that protects the body from disease and infection.
Immune System
The main job of the immune system is to protect the body from these.
Pathogens
Bacteria, viruses, fungi, and parasites are all examples of these.
Pathogens
These blood cells help defend the body against infection.
White Blood Cells
This medical tool prepares the immune system to recognize and fight a pathogen.
Vaccine
This is a germ or organism that can cause disease.
Pathogen
Skin, mucus, tears, and stomach acid are examples of this type of defense.
First Line of Defense
This type of pathogen must use a host cell to reproduce.
Virus
These white blood cells engulf and destroy pathogens
phagocytes
Vaccines may contain a weakened, killed, or harmless piece of this.
Pathogen
These cells help the body fight infections and attack pathogens.
White Blood Cells
This happens when pathogens enter the body, multiply, and cause harm.
Infection
This type of pathogen is single-celled and can reproduce on its own.
Bacteria
These proteins are made by the immune system to recognize and attach to specific pathogens.
Antibodies
This type of immunity happens when the body makes its own antibodies after infection or vaccination.
Active Immunity
These proteins attach to specific antigens and help the immune system fight pathogens.
Antibodies
The immune system responds to pathogens by recognizing substances that do not belong in the body, called these.
Antigens
Coughing, sneezing, touching contaminated surfaces, and close contact are ways pathogens can do this.
Spread from person to person
These cells help the immune system remember a pathogen so it can respond faster later.
Memory Cells
When enough people are immune to a disease, it becomes harder for the disease to spread.
Herd/ Community Immunity
This helps the immune system learn how to fight a disease before a person gets sick.
Vaccine
The body’s ability to resist or fight off infection and disease is called this.
Immunity
These medicines work against bacteria, but not viruses.
Antibiotics
The immune system often responds faster the second time it sees the same pathogen because it has this.
Immune Memory
This is the reason a person may have milder symptoms after vaccination, even if they still get infected.
the immune system is already prepared to fight the pathogen