Immune System!

Lymphocytes that attack foreign cells or body cells infected with viruses are

• Helper T Cells

• Cytotoxic T Cells

• Plasma Cells

• Memory B Cells

A decrease in which population of lymphocytes would impair all aspects of an adaptive immune response?

• B lymphocytes

• Helper T cells

• Cytotoxic T cells

• Plasma cells

After an initial infection, B-cells recognize the measles virus. How is this helpful in human immune response?

• The B-cells use this recognition to defend the body against other pathogens, such as bacteria.

• The B-cells more quickly recognize and respond to any other virus that invades the body.

• The B-cells produce antibodies more quickly if the measles virus is encountered again.

• The B-cells transfer this recognition to T-cells, which will then devour the viruses.

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.

Anything that triggers an immune response is a/n

• lymph cell

• antigen

• antibody

• neutrophil

A nonspecific defensive response of the body to tissue injury characterized by dilation of blood vessels and swelling.

• immunity
• interferon
• immunization
• inflammation

Which cells are responsible for producing large quantities of antibodies?

• T cells
• natural killer cells
• plasma cells
• macrophages

Which type of immunity has memory?

• innate
• adaptive/acquired

Which branch of immunity involves B cells?

• Cell-mediated
• Humoral