Why does a person who had done substantial endurance exercise over a long period have a lower resting heart rate?
What will be an ideal response?
Answer: Long-term endurance exercise induces an enlargement and strengthening of the heart, and an increase in stroke volume. At rest, assuming similar oxygen consumption rates of two people, the endurance-trained person will deliver the same amount of oxygen to the tissues (have the same cardiac output), at a lower heart rate but a greater stroke volume.
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The membrane covering the surface of the lung is referred to as the
A) visceral pericardium. B) parietal peritoneum. C) visceral pleura. D) serous membrane. E) mediastinum.
Which muscles originate distal to the wrist and insert distal to the wrist?
A. intrinsics B. extrensics C. elbow flexors D. elbow extensors
The __________ sometimes expels copious fluid similar to prostatic fluid, which constitutes the female ejaculate.
A. prostate gland B. paraurethral glands C. bulbourethral glands D. vestibular bulb E. vaginal epithelium
Paralysis of the lower limbs is referred to as __________.
Fill in the blank(s) with the appropriate word(s).