Regulation of Contraction Flashcards
1
Q
What functional properties are affected by contraction?
A
- Tenderness
- Water binding ability
- Protein solubility
2
Q
Define isotonic, isomeric, and eccentric contraction.
A
- Isotonic - constant force
- Isomeric - constant length
- Eccentric - extending under load
3
Q
What mediates/limits contraction?
A
- Nervous control
- Attachment to bone
- Sarcomere structure and thick filament length
4
Q
What are the lengths of the sarcomere in following states:
- Resting muscle
- Fully contracted
- Stretched
A
The lengths of the sarcomere in following states:
- Resting muscle - 2.5 um
- Fully contracted - 1.9 um
- Stretched - 3.2-3.5 um
5
Q
What is the length of the thick filament during full contraction?
A
1.5 um
