Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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Question

Transcribed Image Text:Why is muscle 1 more powerful than muscle 4?

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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