In an experiment, the strength of a neural stimulus and the resulting muscle contraction are compared. A single motor neuron that synapses with one muscle fibre is observed in this experiment. One end of the muscle fibre is attached to a mass. The following data were obtained from the experiment. Number of Trials Strength of Stimulus (mV) Mass Lifted by Muscle Contraction (g) 1 20 0 2 40 0 3 60 50 4 80 50 5 100 Not Tested 6 120 50 Is the threshold potential for this muscle fibre exactly 50 mV. Do you agree or disagree? Explain.
In an experiment, the strength of a neural stimulus and the resulting muscle contraction are compared. A single motor neuron that synapses with one muscle fibre is observed in this experiment. One end of the muscle fibre is attached to a mass. The following data were obtained from the experiment. Number of Trials Strength of Stimulus (mV) Mass Lifted by Muscle Contraction (g) 1 20 0 2 40 0 3 60 50 4 80 50 5 100 Not Tested 6 120 50 Is the threshold potential for this muscle fibre exactly 50 mV. Do you agree or disagree? Explain.
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
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In an experiment, the strength of a neural stimulus and the resulting muscle contraction are compared. A single motor neuron that synapses with one muscle fibre is observed in this experiment. One end of the muscle fibre is attached to a mass. The following data were obtained from the experiment.
| Number of Trials | Strength of Stimulus (mV) | Mass Lifted by Muscle Contraction (g) |
|---|---|---|
| 1 | 20 | 0 |
| 2 | 40 | 0 |
| 3 | 60 | 50 |
| 4 | 80 | 50 |
| 5 | 100 | Not Tested |
| 6 | 120 | 50 |
Is the threshold potential for this muscle fibre exactly 50 mV. Do you agree or disagree? Explain.
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