Ch9Act#S-Ph Total 26 points) the following based on the results from the series
ID: 3514114 • Letter: C
Question
Ch9Act#S-Ph Total 26 points) the following based on the results from the series of experiments you conducted on 1. Results (2 pts) threshold voltage: maximum voltage: 2. What term is used to describe the action of increasing the number of motor units activated in order to produce a stronger contraction? (2 pts) 1. Explain the difference between fused and unfused tetanus. (2 pts) 2. Describe what is happening inside the contracting muscle cells that allows for increasing force of contraction with multiple stimuli? (2 pts) Which of the two stimulus rates that you used produced fused tetanus? (1 pt) 3. Describe what happened to the ability of the muscle to sustain its contraction when multiple stimuli at a high frequency were applied continuously (allowing the tracing to cross the screen three times). (2 pts) 4. What term is used to describe this effect? ( pt) Experiment 4: Isometric contraction 1. Describe what is meant by an isometric contraction. (2 pts) Describe what happens to the length of sarcomeres inside a muscle as you lengthen the muscle itself? (2 pts) 2. the force of contraction? In other words, why do you see the change in force of contraction as you alter the sarcomere length? (2 pts) 3. Explain what is happening inside a sarcomere as its length is alExplanation / Answer
Experiment 2:
2. Motor unit recruitment is used to describe the action of increasing number or units activated in order to produce a stronger contraction.It is the successive activation of the motor units with increasing contraction in the muscles. It is a measure of how many motor neurons are activated in a particular muscle.