10/27/22, 3:57 PM
PhysioEx Exercise 2 Activity 4
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PhysioEx Lab Report
Exercise 2: Skeletal Muscle Physiology Activity 4: Tetanus in Isolated Skeletal Muscle Name: Selvana Labib Date: 27 October 2022 Session ID: session-2fd2f051-25b6-098c-9df6-a68d7f66d4b9 Pre-lab Quiz Results
You scored 100% by answering 3 out of 3 questions correctly.
Experiment Results
Predict Question
Stop & Think Questions
Stimulus frequency refers to
You correctly answered: the rate that stimulating voltage pulses are applied to an isolated
whole skeletal muscle.
1
Which of the following distinguishes a state of unfused tetanus from a state of complete
(fused) tetanus?
You correctly answered: Muscle tension increases and decreases during a state of unfused
tetanus.
2
When the stimulus frequency reaches a value beyond which no further increases in force are
generated by the muscle, the muscle has reached its
You correctly answered: maximal tetanic tension.
3
Predict Question: As the stimulus frequency increases further, what will happen to the
muscle tension and twitch appearance with each successive stimulus? Will there be a limit to
this response?
Your answer: As the stimulus frequency increases, the muscle tension generated by each
successive stimulus will increase. There will be no limit to this increase.
1
What begins to happen at around 80 msec?
You correctly answered: unfused tetanus develops.
1
How does the trace at 130 stimuli/sec compare with the trace at 50 stimuli/sec?
2