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wrote...
11 years ago
2. 2.78
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11 years ago
This post is great. It helped me so much Thank you to all who posted answers Slight Smile
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11 years ago
thanks for the help!! Wink Face
wrote...
11 years ago
very helpful!
Arichter Author
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11 years ago
Thank you!
wrote...
10 years ago
Thank you!
Kameron S. Author
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10 years ago
Thanks!
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10 years ago
thanks
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10 years ago
Thank you Slight Smile
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10 years ago
This is great!
wrote...
9 years ago
1. A) latent period

The muscle cells are biochemically preparing to contract, includes all biochemical events from acetylcholine binding to sarcolemma through cross-bridge formation.

B) contraction phase

Sarcomeres are shortening, causing the muscle cells to contract in turn, which causes a force increase.

C) relaxation phase

Sarcomeres are lengthening due to relaxation (cross-bridge broken); force is falling.

2. 2.78 msec ... Acetylcholine binds to sarcolemma; sarcolemma then T-tubules depolarize; Ca++ released from terminal cisternae travels along SR, is release into sarcoplasm, then binds to troponin to unblock tropomyosin binding sites allowing cross-bridge formation (i.e., myosin heads bind to actin).

3. Force generated increased because the total number of cells contracting is increased.

4. In vivo increasing force is achieved by neural activation of an increasingly large number of motor units serving the muscle.

Please contribute further to obtain for assistance...
5.Force generated increased because the total number of cells contracting is increased.
wrote...
9 years ago
super! Thanks
wrote...
9 years ago
contribute
THanks for the help
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