Which of the following would be a normal person's venous oxygen pressure (PaO2)?
a. 35 to 45 mm Hg
b. 45 to 80 mm Hg
c. 80 to 100 mm Hg
d. 100 to 120 mm Hg
A
A normal person's PaO2 is 35 to 45 mm Hg. Higher values could only be achieved by giving the person supplemental oxygen.
Health Professions
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A PA chest projection (lateral decubitus position) demonstrates
1. the C6-7 vertebral bodies without distortion. 2. the manubrium superimposed over the fourth vertebral body. 3. a closed C6-7 intervertebral disk space. 4. clearly shown C6-7 spinous processes and laminae. a. 1 and 2 only b. 2 and 3 only c. 2, 3, and 4 only d. 3 and 4 only
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What is the term for the ability of a cell to reach its threshold potential and respond to a stimulus?
A. contractility B. conductivity C. automaticity D. excitability
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