Mike has difficulty breathing when he's experiencing cold-induced asthma due to a change in which of these physical factors?
A. alveolar surface tension
B. lung compliance
C. lung elasticity
D. airway resistance
Answer: D. airway resistance
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The stroke volume of the heart can be increased by recruiting more cardiac muscle fibers into activity
Indicate whether the statement is true or false.
The mucous membrane that lines the inside of the eyelids is called the
A. conjunctiva. B. sclera. C. aqueous humor. D. lacrimal apparatus.
In an isotonic contraction,
A) Muscle tension exceeds the resistance and the muscle shortens. B) Tension rises and the skeletal muscle length changes. C) The peak tension developed is less than the resistance. D) The muscle as a whole does not change length. E) all of the above
A patient, Aldo S. Terone, was found to have severe arteriosclerosis of his renal arteries, which reduces renal blood flow. Which of these would be consistent with that condition?
A. hypotension (low blood pressure) B. hypertension (high blood pressure) C. decreased vasomotor tone D. exaggerated sympathetic stimulation of the heart E. Both hypotension (low blood pressure) and decreased vasomotor tone would be expected consequences of his condition.