Most of the drop in pressure due to frictional resistance to gas flow occurs in what region?
a. Nose, mouth, and large airways
b. Respiratory bronchioles
c. Terminal bronchioles
d. Terminal respiratory unit
ANS: A
Approximately 80% of the resistance to gas flow occurs in the nose, mouth, and large airways where flow is mainly turbulent.
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Which of the following is the most reliable way to differentiate between a hyperglycemic emergency and a hypoglycemic emergency?
A) Determine whether or not the patient took his insulin or oral antihyperglycemic medicines. B) Determine whether the patient is a type I or type II diabetic. C) Follow the conventional wisdom, "Pale, cool, wet: low; red, hot, dry: high." D) Assess the blood glucose level.
When not in use, should the PID be pointing up?
What will be an ideal response?
Which of the following does not describe the sympathetic division of the autonomic nervous system?
A. It secretes norepinephrine. B. It increases the heart rate. C. It prepares the body for "fight or flight." D. It releases acetylcholine. E. It slows down the stomach muscles.
Which of the following is/are the combining form(s) for "mouth"?
A) or/o B) stomat/o C) dent/o D) both a and b