Chapter 9: Immune System
production of antibodies by plasma cells
specific defense mechanism 3rd
release of perforin and granzyme by cytotoxic cells
specific defense mechanism 3rd
IgM IgG IgA IgD MHC examples of
B lymphocytes
Which one type of cells are responsible for producing and releasing antibodies?
B lymphocytes
Viral infections can usually be treated with antibiotics.
F
Which of the following classes of antibodies activates the inflammatory response by causing the release of histamine?
IgE (captures genes in blood)
Antibodies are classified by size, location, and function, and which one of the following represents the most common type of immunoglobulin(protein)?
IgG
One role of MHC proteins is that they serve as self markers to the human immune system.
T
Prions are infectious proteins that cause normal proteins in the brain to misfold
T
The best way to defend the body from a viral infection is to prevent the infection by using a vaccine.
T
Which one of the following types of T cells is a critical component of the immune system because it stimulates and enhances the activity of other components of the immune system?
T helper cell
Once a macrophage (large cell) engulfs a bacterium, what happens to the foreign cell?
The bacterium is killed by digestive enzymes released from lysosomes.
Which one of the following is TRUE regarding lymph nodes?
They filter lymph fluid, trapping microorganisms and abnormal cells
When comparing viruses and bacteria, which one of the following statements is CORRECT?
Viruses and bacteria both contain genetic material
Any substance that produces an inappropriate response of the immune system is referred to as a(an)
allergen
MHC proteins
barcode for everything in body
Which of the following leukocytes kills its target cells, such as cancer cells or virus-infected cells, by releasing chemicals that break down the target cell membrane?
macrophages
The release of chemicals from injured cells triggers histamine release from
mast cells
natural killer cells
nonspecific defense mechanism 2nd
release of interferons
nonspecific defense mechanism 2nd
acidic pH of skin
physical or chemical barrier 1st
earwax
physical or chemical barrier 1st
Bacterial pathogens cause symptoms of a disease by invading host cells or by producing toxins that damage host cells.
T
Histamine is released by neutrophils (WBC/Mast cells) to induce an inflammation response when tissues become damaged.
T
Which immune system cell must be presented with antigen by an antigen-presenting cell such as a macrophage, in order to become appropriately activated?
T lymphocyte
Antibiotics are most likely to be effective in the treatment of infections caused by
bacteria
Which of the following is associated with the specific defenses of the body?
cell-mediated immunity
Which of the following are proteins in the blood, which when activated can lyse bacterial cells, mark other bacterial cells for destruction, and enhance inflammation?
complement
inflammation
nonspecific defense mechanism 2nd
cytotoxic T cells
specific defense mechanism 3rd
All of the following represent physical and/or chemical barriers that form the body's first line of defense against pathogens EXCEPT which one?
antibodies
Vaccines contain
antigens of the pathogen
