exercise 2 skeletal muscle physiology activity 7 isotonic contractions and the load velocity relationship
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Universiteit Antwerpen (UA)
Farmaceutische Wetenschappen
Inleiding Fysiologie En Functionele Anatomie I (1008FBDFAR)
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26-5-2021 PhysioEx Exercise 2 Activity 7
PhysioEx Lab Report
Exercise 2: Skeletal Muscle Physiology
Activity 7: Isotonic Contractions and the Load-Velocity Relationship
Name:
Date:
Session ID:
Pre-lab Quiz Results
You scored 100% by answering 5 out of 5 questions correctly.
1 During an isotonic concentric contraction, the
You correctly answered: force generated by the muscle is greater than the weight of the attached
load.
2 During an isotonic concentric contraction
You correctly answered: the latent period increases with heavier loads.
3 During the latent period for an isotonic concentric contraction
You correctly answered: cross bridges cycle and, when muscle tension exceeds the load, muscle
shortening occurs.
4 Muscle shortening velocity
You correctly answered: decreases with heavier loads.
5 An isotonic contraction of a muscle is one in which
You correctly answered: the length of the muscle changes.
Experiment Results
Predict Question
1 Predict Question: As the load on the muscle increases, what will happen to the latent period, the
shortening velocity, the distance that the weight moves, and the contraction duration?
Your answer: The latent period will decrease, the shortening velocity will decrease, the distance will
increase, and the contraction duration will increase.
Stop & Think Question
1 What kind of contraction did you observe when you attached the 2.0 gram weight to the skeletal
muscle and stimulated a contraction?
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