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 C
Explanation
Choice A reason: Pronation refers to the rotation of the forearm so that the palm faces downward. It does not describe movement away from the midline.
Choice B reason: Protraction refers to the anterior movement of a body part, such as pushing the shoulders forward. It does not involve lateral movement of the arm.
Choice C reason: This is correct. Abduction is the movement of a limb away from the midline of the body. Raising the arm sideways away from the torso is a classic example of abduction.
Choice D reason: Adduction is the opposite of abduction. It involves moving a limb toward the midline of the body.
Choice E reason: Retraction refers to the posterior movement of a body part, such as pulling the shoulders backward. It does not describe lateral arm movement.
Correct Answer is B
Explanation
Choice A reason: Granulation tissue forms early in the healing process, not after the bony callus. It precedes the formation of fibrocartilaginous and bony calluses.
Choice B reason: Remodeling of the bony callus is the correct answer. After the bony callus forms, it is gradually reshaped by osteoclasts and osteoblasts to restore the bone’s original structure and strength.
Choice C reason: The fibrocartilaginous callus forms before the bony callus, serving as a temporary bridge between broken bone ends.
Choice D reason: Hematoma formation is the initial step in fracture healing, occurring immediately after injury.
Choice E reason:
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