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Bio 170:PhysioEx Exercise 2 Activity 3 Lab Report.
- Course
- BIO 170
- Institution
- Farmingdale State College
Exercise 2: Skeletal Muscle Physiology Activity 3: The Effect of Stimulus Frequency on Skeletal Muscle Contraction lab report.
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11/2/2020 PhysioEx Exercise 2 Activity 3PhysioEx Lab Report
Exercise 2: Skeletal Muscle Physiology
Activity 3: The Effect of Stimulus Frequency on Skeletal Muscle Contraction
Name: Sarah Rodriguez
Date: 2 November 2020
Session ID: session-ca7d4a1f-8536-c1d5-b65a-2fadaafc565e
Pre-lab Quiz Results
You have not completed the Pre-lab Quiz.
Experiment Results
Predict Questions
1 Predict Question 1: As the stimulus frequency increases, what will happen to the muscle
force generated with each successive stimulus? Will there be a limit to this response?
Your answer: As the stimulus frequency increases, the muscle force generated by each
successive stimulus will increase. There will be a limit to this increase.
2 Predict Question 2: In order to produce sustained muscle contractions with an active force
value of 5.2, do you think you will need to increase the stimulus voltage?
Your answer: Yes.
Stop & Think Questions
1 Was there any change in the force generated by the muscle during the second stimulated
twitch?
You correctly answered: Yes, the second twitch generated more muscle force.
2 Is the total muscle force generated by the higher frequency stimulation greater than the
force generated in previous stimulations?
You correctly answered: Yes, it is greater than the previous stimulations.
3 Does the force generated by the muscle change with each additional stimulus?
You correctly answered: As the stimulus frequency increased, the muscle tension generated
by each successive stimulus also increased, and a limiting maximum value was observed.
Experiment Data
Voltage (v) Length (mm) Stimulus Active Force Passive Force Total Force
i
8.5 75 Single 1.83 0.0 1.83
https://media.pearsoncmg.com/bc/bc_0media_ap/physioex/10/ex2/act3/ 1/5
, 11/2/2020 PhysioEx Exercise 2 Activity 3
8.5 75 Multiple 2.87 0.0 2.87
8.5 75 Multiple 3.23 0.0 3.23
8.5 75 Multiple 4.81 0.0 4.81
10 75 Multiple 4.48 0.0 4.48
8.5 75 Multiple 5.65 0.0 5.65
Voltage = 8.5 V
Single Stimulus
Active Force = 1.83
Voltage = 8.5 V
Multiple Stimulus
Active Force = 2.87
Voltage = 8.5 V
Multiple Stimulus
Active Force = 3.23
i
https://media.pearsoncmg.com/bc/bc_0media_ap/physioex/10/ex2/act3/ 2/5
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