Body Defense Systems

What is the body’s first line of defense?

• It is the inflammatory response of fluid and white

  blood cells.

• They're barriers to pathogens in the skin, breathing passages, the

  mouth, and stomach.

• It is the immune response.

What is the body’s second line of defense?

• They are barriers to pathogens in the skin, breathing passages, the

  mouth, and stomach.

• It is the immune

  response.

• It is the inflammatory response of fluid and white

  blood cells.

What is the body’s third line of defense?

• It is the immune

  response.

• It is the inflammatory response of fluid and white

  blood cells.

• They are i barriers to pathogens in the skin, breathing passages, the mouth, and stomach.

They are molecules that the immune system recognizes either as part of your body or as coming from outside your body.

• T cells

• B cells

• Antigen

• Phagocyte

Cells that identify pathogens and distinguish one from another are called

• T cells

• B Cells

• antibodies

• phagocyte

It is a white blood cell that engulfs and destroys pathogens

by breaking them down.

• b cell

• phagocyte

• T cell

• antigen

Tags

NGSS.HS-LS2-6

Proteins that help destroy a pathogen by binding onto its antigens are called

• B cells

• T cells

• antigen

• antibodies

The type of white blood cells that can distinguish between different kinds of pathogens are called

• B cell

• T Cell

• Lymphocyte

• antigen

During the this type of response capillaries widen in the area affected by pathogens.

• inflammatory response

• immune response

• The third line of defense