Consider a concentric muscle action. As we move faster concentrically, the muscle's ability to produce force\_\_\_\_\_\_\_\_. This relationship is defined by the\_\_\_\_\_\_\_\_\_\_\_\_. increases; force-length curve decreases; force-velocity curve increases; force-velocity curve decreases; length-tension curve increases; length-tension curve
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Concentric muscle action refers to the shortening of a muscle during contraction. Show more…
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Which of the following describes the force-frequency relationship? As more action potentials reach the muscle per second, a greater amount of calcium will be present in the muscle cell. This is because not all of the calcium released in response to the previous action potential has been taken back up into the sarcoplasmic reticulum. This increase in calcium concentration leads to a more forceful contraction. The amount of overlap between the actin and myosin filaments at the beginning of the contraction determines how forceful the contraction will be. Greater overlap means that more myosin heads have binding sites available on actin filaments, generating a more forceful contraction. Maximal force production for shortening contractions occurs at very low velocities, and force production is very low at high or maximal velocities. Power is the combination of force and velocity. None of these.
Madhur L.
At point "a", the muscle's contraction velocity is 1 (spell out value, do not use a number). The point "b", which is the y-intercept, is the maximum force of the muscle. The green portion of the curve (to the right of the zero velocity blue line) corresponds with contraction whereby the muscle shortens. In contrast to the green portion of the curve, the red portion of the curve represents contraction.
4. The force–velocity relationship for skeletal muscle indicates that a muscle a. produces maximum force when contracting at its maximum velocity. b. shortens at maximum velocity when contracting against the maximum load it can move. c. produces maximum power when contracting isometrically. d. shortens at maximum velocity when contracting against no load.
Sri K.
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