Skeletal Muscle Mechanics Flashcards
1
Q
What is the main difference between smooth, cardiac and skeletal muscle?
A
- Skeletal muscle is fast (high ATPase activity)
- each fiber innervated
- all Ca come from SR
*extracellular Ca participate in smooth and cardiac (have internally store too)
2
Q
What protein bind calcium to mediate contraction in the smooth muscle?
A
Calmodulin
3
Q
How is the sarcoplasmic reticulum controlled in the smooth muscle?
A
Second messengers
*lack T tubules
