Support Us

If you found our community helpful, your small donation will help us reach more students around the globe. You may also like us on Facebook or follow us on Twitter.
New Topic  
wrote...
Posts:
57
Credits:
10
Rep:
1 0
3 years ago
ACTIVITY 7:  Isotonic Contractions and the Load-Velocity Relationship

1.   True or False:  A muscle that is contracting isometrically will fatigue much slower than one that is contracting isotonically. 

2.   If you were using your biceps muscles to curl a 7kg dumbbell, when would your muscles be contracting isotonically?
3.   Explain why the latent period became longer as the load became heavier in the experiment.

4.   Explain why the shortening velocity became slower as the load became heavier in this experiment.


5.   Explain why it would take you longer to perform 10 repetitions lifting a 10kg weight than it would to perform the same number of repetitions with a 5kg weight.

6.   Describe what would happen in the following experiment:  A
2.5g weight is attached to the end of the isolated whole skeletal muscle used in these experiments.  Simultaneously, the muscle is maximally stimulated by 8.5 volts and the platform supporting the weight is removed. 
a.   Will the muscle generate force?
b.   Will the muscle change length?
c.   What is the name for this type of contraction?
  • Read 1446 times
New Topic      
Related Topics
This topic is currently locked from adding new posts. Only administrators and moderators can reply. If you'd like to contribute to this topic, start a new thread and make reference to this one. Otherwise, contact a moderator for more options.

Control Panel

Click to ask a question. 121 Students and 5 members are standing by to answer all your science and biology homework problems, free.
Dictionary
Search Images
Gallery
Views
374
Rating

Views
613
Rating

Views
27
Rating

Views
336
Rating