The predominance of one type of muscle fiber over another in the human body results primarily from:
A. A conditioning program
B. Gender
C. Inherited genetic factors
D. Age
Answer: C
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Which of the following is NOT a risk factor that might interfere with safe participation in exercise?
a. irregular heart rhythm b. abnormal blood pressure c. a resting heart rate of 64 beats per minute d. fainting
Of the carcinogenic substances in tobacco smoke, which is most damaging to the lungs?
A. carbon monoxide B. tar C. nicotine D. nitrous oxide
When a physician administers medication to relieve severe pain in a terminally ill patient, and the medication also hastens the patient's death, the situation is called
A. active euthanasia. B. a double effect. C. physician-assisted suicide. D. passive euthanasia.
Wasting away of the muscle is
A. dystrophy B. hypertrophy C. atrophy