Immune System

Open Ended

How is the adaptive immune system different from the innate immune system?

Multiple Choice

Which of the following is NOT a component of the innate immune system's immediate response?

• Neutrophils

• Natural killer cells

• Macrophages

• Antibodies

Multiple Select

Select all correct statements about the body's lines of defense against pathogens.

• The first line of defense includes mucous membranes and their secretions.

• The second line of defense involves B-cells producing antibodies.

• Phagocytic white blood cells are part of the second line of defense.

• The third line of defense includes lymphocytes recognizing specific antigens.

Fill in the Blanks

The protein that forms the meshwork of a blood clot is called

.