Question 1: The coronary ostia are located in the:

• Left ventricle
• Aortic valve (correct answer)
• Coronary sinus
• Aorta

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Question 2: Where in the respiratory tract do the majority of foreign objects aspirated by children finally lodge?

• Trachea
• Left lung
• Bronchus (correct answer)
• Bronchioles

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Question 3: Which type of antibody is involved in type I hypersensitivity reaction?

• IgA
• IgE (correct answer)
• IgG
• IgM

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Question 4: Hypersensitivity is best defined as a(an):

• Disturbance in the immunologic tolerance of self-antigens
• Immunologic reaction of one person to the tissue of another person
• Altered immunologic response to an antigen that results in disease (correct answer)
• Undetectable immune response in the presence of antigens

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Question 5: What is the final stage of the infectious process?

• Colonization
• Invasion
• Multiplication
• Spread (correct answer: Spread)

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Question 6: The function of the foramen ovale in a fetus allows what to occur?

• Right-to-left blood shunting (correct answer)
• Left-to-right blood shunting
• Blood flow from the umbilical cord
• Blood flow to the lungs

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Question 7: It has been determined that a tumor is in stage 2. What is the meaning of this finding?

• Cancer is confined to the organ of origin.
• Cancer has spread to regional structures. (correct answer)
• Cancer is locally invasive.
• Cancer has spread to distant sites.

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Question 8: What is the primary problem resulting from respiratory distress syndrome (RDS) of the newborn?

• Consolidation
• Pulmonary edema
• Atelectasis (correct answer)
• Bronchiolar plugging

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Question 9: Which statement is true concerning IgM?

• IgM is the first antibody produced during the initial response to an antigen. (correct answer)
• IgM mediates many common allergic responses.
• IgM is the most abundant class of immunoglobulins.
• IgM is capable of crossing the human placenta.

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Question 10: Apoptosis is a(an):

• Normal mechanism for cells to self-destruct when growth is excessive (correct answer)
• Antigrowth signal activated by the tumor-suppressor gene Rb
• Mutation of cell growth stimulated by the TP53 gene
• Transformation of cells from dysplasia to anaplasia

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