Printable Version PrintSelect to access a page to configure your activity results printing.BackSelect to return to the Lab Report page PhysioEx Lab Report Exercise 2: Skeletal Muscle Physiology Activity 3: The Effect of Stimulus Frequency on Skeletal Muscle Contraction Name: brooke arrington Date: 30 March 2020 Session ID: session-11391bfa-32ea-deff-f7f0-3cb1120662f9 Pre-lab Quiz Results You scored 100% by answering 4 out of 4 questions correctly. 1 During a single twitch of a skeletal muscle You correctly answered: maximal force is never achieved. 2 When a skeletal muscle is repetitively stimulated, twitches can overlap each other and result in a stronger muscle contraction than a stand-alone twitch. This phenomenon is known as You correctly answered: wave summation. 3 Wave summation is achieved by You correctly answered: increasing the stimulus frequency (the rate of stimulus delivery to the muscle). 4 Wave summation increases the force produced in the muscle. Another way to increase the force produced by a muscle is to You correctly answered: increase the number of activated motor units. 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 no 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?
- Fall '16
- muscle tension