Immune System

What is a preparation of dead or weakened pathogens that is introduced into the body to cause an immune response?

• fungi

• vaccine

• antigens

What function do memory cells have in our body?

• They help our immune system remember pathogens

• They store information in our short-term memory

• They send chemical signals from our blood to the brain

• All of the above

What is the body's first line (non-specific) of defense against infection by foreign organisms?

• antibodies

• lymph nodes

• white blood cells

• the skin

White blood cells are an important part of the human immune response. Two types of white blood cells, neutrophils and macrophages, act as phagocytes. Phagocytes perform which of the following functions in the human body?

• They produce antibodies.

• They bind to antigens and develop into plasma cells

• They form a barrier against pathogens.

• They engulf and destroy bacteria

Tags

NGSS.HS-LS2-3

Although vaccines cannot be used to treat a person who is sick, they can help to prevent infections. Vaccinations tell the body to create "memory cells", which will function later to create antibodies against certain pathogens. When a person is vaccinated, what are they injected with?

• antibodies to a disease bacterium

• live, inactive viruses

• weakened viruses or antigens from the virus

• blood from a person who has had the disease

The purpose of the immune system is to...

• Help germs invade your body

• Fight off sickness

• Make your nose run

• Give you diarrhea

The immune system is made up of:

• Tissues

• Organs

• Cells

• All of the above

Tags

NGSS.MS-LS1-3

As part of the immune system, which blood cells fight germs. Another name for white blood cells is...

• Rhinovirus

• Leukocytes

• Glands

• Nodes

Leukocytes are found in lots of places, including an organ in your belly that filters blood and helps fight infections known as the...

• Heart

• Spleen

• Kidneys

• Brain

Getting these helps your immune system fight off disease:

• Stickers

• Bandages

• Immunizations

• Cough Drops