Poll

Which 'study break' activity do you find most distracting?
Talking / texting
Playing video games
Listening to music
Watching TV
Browsing the web
Napping
Other
If you would like to vote in this poll, please login or register

New Topic  
wrote...
Posts: 37
Credits: 230
Rep: 2 0
5 years ago
Activity 9:  Isotonic Contractions

3.   You can observe from the trace that the muscle is rising in force before it reaches the plateau phase.  Why doesn’t the muscle shorten prior to the plateau phase?

7.   What happened when you attached the 2.0 gram weight to the muscle and stimulated the muscle?  How did this trace differ from the other traces?  What kind of contraction did you observe?

Please help me ! Thank you!     
Read 1976 times
1 Reply
replies
wrote...
*
5 years ago
Hey!

Activity 9

5. During the flat part of the tracing, the muscle rises from the surface of the platform and then descends again.
The force production does not change during the flat part of the tracing (the tracing is flat!); it stays the same.

6. 1.5g | 0.45 mm/sec
7. 1.0g | 1.34 mm/sec
2.0g | 0.00 mm/sec

9. The greater the resistance (weight), the shorter the initial velocity of shortening.

15. As the starting length of the muscle is increased from 60 mm to 90 mm, the initial velocity of shortening first increases (to a muscle length of 75 mm) and then decreases.
- Master of Science in Biology
- Bachelor of Science (Biology)
- Bachelor of Education
New Topic      
Similar topics that might interest you
Introductory Courses   5 years ago   shaundavis24   how_mendel   15 Replies   22169 Views
Upper-Year Courses   5 years ago   Nicholle87   butterpecan   3 Replies   3761 Views
Upper-Year Courses   5 years ago   Nicholle87   ppk   5 Replies   6592 Views
Anatomy and Physiology   5 years ago   nkeaton   2 Replies   2259 Views
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.

Explore

Post homework questions online and get free homework help from tutors.
Learn More
Improve Grades
Help Others
Save Time
Accessible 24/7
There are currently 553 guests browsing and 24 members online. So far today, 1041 students have registered.
Related Images
542
0
09/14/12

551
5
10/07/12

1104
0
10/06/14