You need to login first

Login information

Haven't yet registered?

×
* * * *
top posters

Support Us

If you found our community helpful, your small donation will continue to help us reach more students around the globe. You may also like us on Facebook or follow us on Twitter.
Pages: 1     Go Down
  New Topic  |  Print  
PhysioEx 9.0 Exercise 2, activity 6
Read 11478 times | 3 Replies | Average Rating: Not Rated Yet
fathead
Jellyfish
*
Posts: 5
Points: 30
Rep:  +0  -0 

For a more comfortable homework help experience, try HomeworkClinic.com.
Having troubles with the review questions, What happens to the amount of total force the muscle generates during the stimulation twitch? how well did the results compare with your prediction?  I predicted total force can increase or decrease depending upon the starting resting length. It looks like it decreased not matter if the muscle was stretched or shortened, but the passive force rose with increasing the length of muscle?

What is the key variable in an isometric contraction of a skeletal muscle? I put down " the muscle stays at a fixed length"?

also would like help with 3rd 4th and 5th questions as well, Exercise 2, activity 6, or all of this exercise to see if my answers are correct up to now...
   
  Thank You for you time

Extra informationPhysioEx 9.0  Exercise 2
Report this PostReport Abuse
replies
Reply# 1
*
Posts: 12960
Points: 4486
Rep:  +775  -3 
3 years ago

The length-tension relationship. The passive force is important in determining the active force produced.

What is the key variable in an isometric contraction of a skeletal muscle? I put down " the muscle stays at a fixed length"?



Report this PostReport Abuse
 
Reply# 2
*
*
Posts: 487
Points: 3495
Rep:  +42  -0 
3 years ago

Having troubles with the review questions, What happens to the amount of total force the muscle generates during the stimulation twitch? how well did the results compare with your prediction?  I predicted total force can increase or decrease depending upon the starting resting length. It looks like it decreased not matter if the muscle was stretched or shortened, but the passive force rose with increasing the length of muscle?

What is the key variable in an isometric contraction of a skeletal muscle? I put down " the muscle stays at a fixed length"?

also would like help with 3rd 4th and 5th questions as well, Exercise 2, activity 6, or all of this exercise to see if my answers are correct up to now...
   
  Thank You for you time
 
My class did not have to do this lab, but I dug these up...

Review Sheet Results
1. What happens to the amount of total force the muscle generates during the stimulatedtwitch? Increased with increase in muscle length up until 80ml where the force peak and declineat higher length

2. What is the key variable in an isometric contraction of a skeletal muscle? Muscle length

3. Based on the unique arrangement of myosin and actin in skeletal muscle sarcomeres, explainwhy active force varies with changes in the muscle's resting length. Active force varies withlength, because with small length there is a lot of exhchange between actin and myosin

4. What skeletal muscle lengths generated passive force?Huh???

5. If you were curling a 7-kg dumbbell, when would your bicep muscles be contractingisometri cally? Biscep is contracting isometriclly when arm extended fully downward and theholding weight up down for the initiation of upward width



Report this PostReport Abuse
 
Reply# 3
Posts: 1
Points: 50
Rep:  +0  -0 
3 years ago

Thanks for the help...i hate these labs!



Report this PostReport Abuse
Pages: 1     Go Up New Topic Print
 
Related Topics
Note: 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.

Ask a Question

ask
Click to ask a question. 747 Students and 79 members are standing by to answer all your science and biology homework problems, free. So far today, 634 guests have joined.
Related Images
Views
440
Rating

Views
329
Rating

Views
70
Rating