Immune System Function and Response

What is the main job of your body's immune system?

• To help you digest food.

• To protect your body from harm.

• To make your bones strong.

• To help you breathe.

Which parts of your body act like a shield to stop germs from getting inside?

• Your heart and lungs.

• Your skin and mucous membranes.

• Your bones and muscles.

• Your brain and nerves.

What do T cells do when they find body cells that are infected or have turned bad (like cancer cells)?

• They give the cells medicine to make them better.

• They ignore the cells and move on.

• They help to destroy the bad cells.

• They tell the cells to hide.

What happens after a phagocyte eats a germ?

• It stores the germ inside forever.

• It breaks the germ into tiny pieces and shows them on its surface.

• It turns into a new type of germ.

• It immediately leaves the body.

What do Helper T cells release to tell other immune cells that there is a problem?

• Antibodies

• Cytokines

• Proteins

• Enzymes

How do cytotoxic T cells destroy infected body cells?

• They make the infected cells stronger.

• They eat the infected cells whole.

• They release special enzymes that create holes in the cell and cause it to self-destruct.

• They cover the infected cells so other cells can't see them.

What must happen for a B cell to become fully active and produce antibodies after it finds a harmful substance?

• It must bind to a healthy protein.

• It must be checked by a Helper T cell.

• It must first become a memory cell.

• It must release granzymes and perforins.

What can happen if the immune system becomes too active and starts attacking the body's own healthy tissues?

• The body becomes immune to all diseases.

• It can lead to autoimmune diseases like Multiple Sclerosis.

• It makes the body's cells grow faster.

• It helps the body produce more healthy proteins.