A fast glycolytic fiber would be needed for which action?
Sprinting
Raking leaves
Maintaining posture
Hitting a golf ball
Running a marathon
The Correct Answer is A
Choice A reason: Fast glycolytic fibers are specialized for short bursts of high-intensity activity. They rely on anaerobic metabolism, have large diameters, high glycogen content, and contract rapidly. Sprinting demands explosive power and speed, making these fibers ideal for the task.
Choice B reason: Raking leaves is a moderate-intensity, sustained activity that relies more on slow oxidative or intermediate fibers. It does not require the rapid, forceful contractions characteristic of fast glycolytic fibers.
Choice C reason: Maintaining posture involves continuous, low-intensity contractions, typically supported by slow oxidative fibers. These fibers are fatigue-resistant and suited for endurance, not rapid force generation.
Choice D reason: Hitting a golf ball involves a quick, forceful movement, but it is more reliant on fast oxidative-glycolytic fibers due to the need for both speed and some endurance. It is not as purely anaerobic and explosive as sprinting.
Choice E reason: Running a marathon is a prolonged endurance activity that depends heavily on slow oxidative fibers, which are efficient at aerobic metabolism and fatigue-resistant. Fast glycolytic fibers are not suited for this type of sustained effort.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Choice A reason: Supination refers to the rotation of the forearm or foot, not the vertebral column. It is not a movement that occurs between vertebrae, making it the correct answer.
Choice B reason: Extension is a movement that increases the angle between vertebrae, such as bending backward. It is a common vertebral movement.
Choice C reason: Flexion decreases the angle between vertebrae, such as bending forward. It is a typical movement of the spine.
Choice D reason: Rotation involves turning the vertebral column around its axis, such as twisting the torso. It is a valid vertebral movement.
Correct Answer is D
Explanation
Choice A reason: Epiphysis and diaphysis refer to regions of a long bone—the ends and shaft respectively—not to the coverings of bone surfaces.
Choice B reason: This reverses the anatomical regions but still does not address the coverings of bone surfaces.
Choice C reason: Compact bone and spongy bone are types of bone tissue, not the membranes that line or cover bone surfaces.
Choice D reason: The periosteum is a dense fibrous membrane that covers the external surface of bones, providing attachment points for tendons and ligaments and housing blood vessels and nerves. The endosteum lines the internal surfaces, including the medullary cavity, and plays a role in bone growth and remodeling.
Choice E reason: This reverses the correct anatomical relationship. The endosteum lines the internal surface, not the external.
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