Chapter 21: The Immune System: Innate and Adaptive Body Defenses

Which of the following types of cells is involved in adaptive immunity?

B cells

Which of the following is NOT a sign of inflammation?

fever

The first step in inflammation is __________.

the release of inflammatory chemicals

margination

Phagocytic cells cling to the inner walls of the capillaries.

chemotaxis

White blood cells migrate to the site of tissue damage.

leukocytosis

The number of white blood cells that are in circulation increases.

diapedesis

Phagocytes squeeze through the capillary endothelium.

Which of the following is NOT a property of interferons (IFNs)?

IFNs stimulate B cells to produce antibodies.

A moderate fever is an example of an innate body defense.

True

Humoral immunity is provided by __________.

antibodies

__________ are substances that can trigger the adaptive defenses and provoke an immune response.

Antigens

__________ is the property of lymphocytes that prevents them from attacking the body's own cells.

Self-tolerance

Self-reactive B cells are eliminated in the __________.

bone marrow

Which of the following is a characteristic of a secondary immune response?

A secondary immune response lasts longer than a primary immune response.

A vaccination works to establish __________.

artificial active immunity

IgD

antigen receptor found on B cells

IgG

most abundant class of antibodies

IgM

large, pentamer-shaped antibody

IgE

antibody that mediates some allergies

IgA

dimeric antibody found in body secretions

Which are correctly matched?

cytotoxic T cells: activated by antigens bound to MHC I

MHC II proteins are found on __________.

antigen-presenting cells

What is the second step of T cell activation?

co-stimulation

Which of the following are MISMATCHED?

helper T cells: directly target and kill cancer cells

The most common type of organ transplant is the __________.

allograft

AIDS

condition in which T helper cells are destroyed by a virus

delayed hypersensitivity

allergic contact dermatitis

immediate hypersensitivity

allergy

severe combined immunodeficiency(SCID) syndrome

genetic defect resulting in a shortage of B and/or T cells

rheumatoid arthritis

autoimmune disorder