quiz 21

Which of the following is NOT a role of activated complement?

•  

  opsonization

  
  

•  

  enhancement of inflammation

  
  

•  

  insertion of MAC and cell lysis

  
  

•  

  prevention of immediate hypersensitivity reactions

  
  

Passive immunity does not produce memory cells.

•  

  True

  
  

•  

  False

  
  

Helper T cells aid in B cell activation by:

• Producing memory cells

  
  

• Providing antibodies

  
  

• Secreting cytokines to enhance B cell response

  
  

• Recognizing the antigen directly

  
  

Vaccines work by ________.

•  

  providing the necessary antibodies to fight infections

  
  

•  

  suppressing inflation to help speed healing

  
  

•  

  boosting innate immunity with cytokines

  
  

•  

  priming the adaptive immunity with a relatively harmless primary exposure

  
  

Which of the following is not a type of T cell?

•  

  antigenic

  
  

•  

  regulatory

  
  

•  

  cytotoxic

  
  

•  

  helper

  
  

Allergens differ from antigens because ________.

•  

  allergens do not involve the leucocytes, they simply stimulate the inflammatory response

  
  

•  

  allergens produce an abnormally large immune response to what is an otherwise harmless particle

  
  

•  

  allergens are primarily plant derived while antigens are bacterial or viral in nature

  
  

•  

  allergens are only active seasonally and are generally harmless to the body

  
  

 

allergens are only active seasonally and are generally harmless to the body

•  

  the use of antibodies to cause cell lysis and kill invading cells

  
  

•  

  the specificity of its individual cells which specialize in the removal on one type of antigen

  
  

•  

  the numerous steps in the activation of its cells that can prevent autoimmune disease

  
  

•  

  its barriers that prevent pathogens from entering into the body

  
  

Which characteristic best describes the chemotaxis behavior of phagocytes?

• Random movement within tissues

  
  

• Movement away from inflammation

  
  

• Movement toward inflammation

  
  

• Movement towards bone marrow

  
  

A vaccine is effective because ________.

•  

  the secondary response of the adaptive immunity is faster and more efficient the primary response

  
  

•  

  the vaccine contains the antibodies necessary to fight infection

  
  

•  

  B-lymphocytes are unable to mount an immune response the first time they are exposed to a new pathogen

  
  

•  

  the vaccine contains the lymphocytes necessary to fight infection

  
  

Inflammation ________.

•  

  is caused by bacterial activity to enhance the spread of disease

  
  

•  

  is caused by viral activity to enhance the spread of the disease

  
  

•  

  brings more leukocytes to the sight of infection

  
  

•  

  slows the healing process with swelling that can impair bodily function