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18 February, 20:14

Consider the factors that affect muscular strength. Read each scenario and then click and drag each label into the appropriate category based on whether each would result in a stronger or weaker muscle contraction.

1 - Potassium accumulate in the sarcoplasm

2 - Increase in muscle belly circumference

3 - Lesser proportion of motor neurons to muscle fibres

4 - Begin contractions with muscle already 50% contraction

5 - Lower sarcoplasm pH

6 - Increased stimulus frequency.

7 - Circular arrangement of muscle fascicles

8 - increased requirement

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  1. 18 February, 23:55
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    Muscular strength

    Explanation:

    Muscles that are elongated while activated (i. e., eccentric muscle action) are stronger and require less energy (per unit of force) than muscles that are shortening (i. e., concentric contraction) or that remain at a constant length (i. e., isometric contraction)

    stronger muscle contraction includes:

    Potassium accumulate in the sarcoplasm Increase in muscle belly circumference Increased stimulus frequency Increased requirement Lesser proportion of motor neurons to muscle fibers

    weaker muscle contraction includes:

    Begin contraction with muscle already 50% contracted Circular arrangement of muscle fascicles Lower sarcoplasm pH
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