1. Why, when looking at a single muscle dissected out of an organism, does force
ID: 3480421 • Letter: 1
Question
1. Why, when looking at a single muscle dissected out of an organism, does force decrease as the length of the dissected muscle shortens? Why, when looking at a single muscle dissected out of an organism, does force decrease as the length of the dissected muscle shortens?
2. Design an experiment to test the restoration and recovery hypothesis. Your experiment should have a control, and you should explain what you would change (and how you would change it), what you would measure and why, and what your data would look like if your animals were NOT sleeping to restore their bodies.
Explanation / Answer
1) When looking at a single dissected out of an organism force decreases as the length of the dessected muscle shortens.When looking at a dissected muscle force decreases because The force generated by a muscle is a function of its velocity.As the length of the muscle decreases with increase in velocity
2) Experiment design: A muscle is allowed to shorten against a constant load.
The muscle velocity during shortening is measured.and then plotted against the resistive force.The general form of these relationship can be shown in the below that on the horizontal axis muscle velocity relative to maximum velocity V max While on the verticle axis is plotted muscle force relative to maximum isometric force Po.
The force generated by the muscle depends upon the number of cross bridges attached, because it takes a finite amount of time for cross bridges to attach as the muscle shortents with increase in velocity. we have to take the constant value of maximum velocity. We have to measure the data of muscle force relative to isometric force and muscle velocity to the maximum velocity of the muscle.
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