36. Male and female athletes have : The contractile unit of muscle is called (a)
ID: 163757 • Letter: 3
Question
36. Male and female athletes have : The contractile unit of muscle is called (a): Sarcoplasm. Myofibril. Nucleus Sacromere. Two ways in which muscles can be volitionally controlled so that force of strength of contraction is matched to the task at hand are: Additional stimulation and accommodating resistance. Wave form differentiation and summary promulgation. Motor unit concentration and temporal resistance. Which muscle fibers have the greatest aerobic capacity: Type IC Type IIA. Type IIB Type IIC Which of the following is correct? Type I fibers are preferentially recruited for sprinting. Type I fibers, because of their greater PC content, are used for postural work. Type II fibers are found in greater percentages in endurance athletes than in non-endurance athletes. Type fibers have a relatively high aerobic capacity and fatique slowly. Type I fibers are: Always recruited regardless of exercise intensity. Only recruited during low intensity exercise. Only recruited during high intensity exercise. Recruited during both high and low intensity exercise but are not used in all out maximal efforts. Male and female athletes have: The same Type I and Type II fiber size ratio. The same fiber Type distribution but different histochemical properties. The same fiber Type distribution and histochemical properties. The same size muscle fibers.Explanation / Answer
Please find the answers below:
Answer 35: Choice D (The type I fibres are slow twitch fibres which contain a large amount of myoglobin. They are populated in the areas where maximal exercise is not required but support to the fast-twitching muscles. Thus, these fibres are always involved in performing an exercise effort regardless of its intensity)
Answer 36: Choice B (Owing to differential habits and muscular practices, the histochemical properties i.e. extent of differential protein expression, intensity of work load bearing capacity and the morphological apperance of type I and II fibres are different in males and females. However, the basic physiological function performed by them is similar in both cases.)
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