Activity: crush contractions and Summation
Predictions
resultant role of Muscle Fiber Length on abbreviation
1. As muscle character reference length increases
contraction force increases.
put of Stimulation Frequency on Contraction
2. As the frequency of rousing increases, the force of contraction:
decreases.
Materials and Methods
Measurement of Threshold comment
1. Dependent variable quantity
contraction force
2. Independent changeable
stimulation voltage
3. Controlled unsettleds
temperature; frequency of stimulation; muscle vulcanized fiber length
Effect of Muscle Length on Contraction
1. Dependent Variable
contraction force
2. Independent Variable
muscle fiber length
3. Controlled Variables
frequency of stimulation; stimulation voltage; temperature
Effect of Stimulation Frequency on Contraction
1. Dependent Variable
contraction force
2. Independent Variable
frequency of stimulation
3. Controlled Variables
stimulation voltage; temperature
Results
Table 4: Measurement of Threshold Stimulus
Voltage (mV)
100 mV 200 mV 300 mV 400 mV 500 mV
squelch
(gf)(Motor
neuron 1)
0 0 0 0.107 0.
107
?
Effect of Stimulation Value on Twitch Contraction Force
aver the threshold stimulus and State how increasing voltage above threshold affects force development.
The stimulus, measured in volts, causes depolarization in either the nerve or muscle fiber. If depolarization reaches threshold, the nerve or
muscle fiber will generate an action potentially thereby causing contraction.
Table 5: Muscle Length and Contraction Force
Force( gf )( Muscle length (mm)
Motor
neuron 1)
6.5 7.0 7.5 8.0 8.5 9.0 9.5 10 10.5
runnel 1 0.087 0.094 0.104 0.106 0.106 0.106 0.096 0.085 0.077
Trial 2 0.089 0.096 0.106 0.108 0.108 0.108 0.098 0.087 0.079
Trial 3 0.088 0.095 0.105 0.107 0.107 0.107 0.097 0.085 0.078
Averages 0.088 0.095 0.105 0.107 0.107 0.107 0.097 0.086 0.078...If you want to get a full essay, order it on our website: Orderessay
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