Blood flow between the heart and lungs comprises the:
A) pericardium
B) epicardium
C) endocardium
D) myocardium
A
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One of the more serious diseases of the body is called renal failure. Renal failure occurs when the:
A) adrenal glands stop working. B) kidneys fail to function as required. C) pancreas stops working. D) liver fails to function properly.
Numerous emerging issues that will challenge firefighters in the future and will require research include?
A) Hazardous materials B) Terrorism C) School violence D) All of the above
Viral meningitis is more life threatening than bacterial meningitis
Indicate whether the statement is true or false
Which of the following statements about oxygen concentrations and combustions is MOST accurate?
A. Combustion does not occure at concentrations below about 18% because fire needs oxygen to burn. B. Combustion will occur below normal oxygen levels only when the substance burning is an oxidizer C. Combustion requires oxygen levels in the immediate range of ambient air (21%) in order to burn freely D. Combustion may occur at oxygen concentrations as low as 14% or lower given the right circumstances