a) Which muscle(s) of these four is (are) the longest at resting length? b) What is the resting length of muscle 2?

Human Physiology: From Cells to Systems (MindTap Course List)
9th Edition
ISBN:9781285866932
Author:Lauralee Sherwood
Publisher:Lauralee Sherwood
Chapter8: Muscle Physiology
Section: Chapter Questions
Problem 16UC
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a) Which muscle(s) of these four is (are) the longest at resting length?
b) What is the resting length of muscle 2?
Transcribed Image Text:a) Which muscle(s) of these four is (are) the longest at resting length? b) What is the resting length of muscle 2?
The graphs below show the force-versus-shortening-velocity and power-versus-
shortening-velocity curves for four muscles in the human lower extremity. Note
that these curves show this relationship only for shortening activations (positive
shortening velocities), not lengthening activations. And, note that the values
displayed on the axes of the graphs are absolute (not normalized) values of force,
power, and velocity.
These graphs apply to the next three questions.
Force vs Shortening Velocity
Power vs Shortening Velocity
1,500
400
1,200
300
2 900
200
600
100
300
0.0
0.5
1.0
1.5
2.0
0.0
0.5
1.0
1.5
2.0
Shortening Velocity (m/s)
Shortening Velocity (m/s)
muscle 1
muscle 3
muscle 2
muscle 4
Force (N)
Power (W)
Transcribed Image Text:The graphs below show the force-versus-shortening-velocity and power-versus- shortening-velocity curves for four muscles in the human lower extremity. Note that these curves show this relationship only for shortening activations (positive shortening velocities), not lengthening activations. And, note that the values displayed on the axes of the graphs are absolute (not normalized) values of force, power, and velocity. These graphs apply to the next three questions. Force vs Shortening Velocity Power vs Shortening Velocity 1,500 400 1,200 300 2 900 200 600 100 300 0.0 0.5 1.0 1.5 2.0 0.0 0.5 1.0 1.5 2.0 Shortening Velocity (m/s) Shortening Velocity (m/s) muscle 1 muscle 3 muscle 2 muscle 4 Force (N) Power (W)
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