Which of the Following Statements Best Explains the Continued Incidence

question 12

Multiple Choice

Which of the following statements best explains the continued incidence of infectious disease in the United States today?

• A) Illness theory explains that there are many causes of illness resulting from environmental conditions.
• B) No single theory adequately explains why a particular person gets a particular illness at a particular time.
• C) The germ theory explains that a specific infection is caused solely by the invasion of particular bacteria.
• D) The theory of susceptibility states that an individual only gets ill when there is extensive stress in his or her life.

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Definitions:

End-Systolic Volume

The volume of blood remaining in each ventricle of the heart after systole, the contraction phase.

End-Diastolic Volume

The volume of blood in the ventricles at the end of diastole, immediately before contraction, reflecting the amount of blood ready to be pumped out of the heart.

Left Ventricular Pressure

The pressure generated in the left ventricle of the heart during its contraction.

Aortic Semilunar Valve

A valve located between the left ventricle of the heart and the aorta that prevents backflow of blood into the heart during the heart's relaxation phase.