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a.  Define the all-or-none principle.  b.  The same student remarked that at 180 mV stimulus, it is expected that 100 g mass is lifted by the muscle fibre. Do you agree or disagree? Why or why not?

a.  Define the all-or-none principle.  b.  The same student remarked that at 180 mV stimulus, it is expected that 100 g mass is lifted by the muscle fibre. Do you agree or disagree? Why or why not?

Human Anatomy & Physiology (11th Edition)
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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a.  Define the all-or-none principle. 

b.  The same student remarked that at 180 mV stimulus, it is expected that 100 g mass is lifted by the muscle fibre. Do you agree or disagree? Why or why not? 

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. Analyze the data and answer the following questions. Number of Trials Strength of Stimulus (mV) Mass Lifted by Muscle Contraction (g) 20 2 40 3 60 50 4 80 50 100 Not Tested 120 50 *note that the voltage applied is positive in order to raise potential from resting to threshold
Transcribed Image Text: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. Analyze the data and answer the following questions. Number of Trials Strength of Stimulus (mV) Mass Lifted by Muscle Contraction (g) 20 2 40 3 60 50 4 80 50 100 Not Tested 120 50 *note that the voltage applied is positive in order to raise potential from resting to threshold
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