1.)      Does the data in the table provide sufficient evidence of the value for the threshold potential? Why or why not?    2.)     A student remarked that at 180 mV of stimulus, it is expected that 100 g mass is lifted by the muscle fiber. Do you agree or disagree? Why or why not?    3.)   How would you modify this experiment so that the mass lifted by the muscle contraction continues to increase for every trial?

College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
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Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
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1.)      Does the data in the table provide sufficient evidence of the value for the threshold potential? Why or why not? 

 

2.)     A student remarked that at 180 mV of stimulus, it is expected that 100 g mass is lifted by the muscle fiber. Do you agree or disagree? Why or why not? 

 

3.)   How would you modify this experiment so that the mass lifted by the muscle contraction continues to increase for every trial? 

 

 

4.)  A pin can be pressed against the skin lightly and elicit no response from the pain receptor. However, if the pin is jabbed into the finger, the pain receptor may be stimulated and the finger would quickly be withdrawn through a reflex arc. 

Use what you know about threshold potential and the all-or-none principle to explain different levels of sensation (light touch or pain). 

Use the following information to answer the next four questions.
Muscle Contraction
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 fiber is observed in this experiment. One end
of the muscle fiber
s attached to a mass. The following data was 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)
1
20
40
3
60
50
4
80
Not Tested
5
100
Not Tested
6
120
50
Transcribed Image Text:Use the following information to answer the next four questions. Muscle Contraction 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 fiber is observed in this experiment. One end of the muscle fiber s attached to a mass. The following data was 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) 1 20 40 3 60 50 4 80 Not Tested 5 100 Not Tested 6 120 50
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Explain what will need to occur for the test subject to lift a mass of 200g

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A student remarked that at 180 mV of stimulus, it is expected that 100 g mass is lifted by the muscle fiber.

Do you agree or disagree? Why or why not? 

 

 

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