Stimulus for contraction 2 Flashcards
1
Q
What is the only condition for the contraction to continue?
A
As long as the nerve impulse continues
2
Q
What happens after the nerve impulse stops?
A
leads to relaxation of the muscle
3
Q
What does acetylcholinesterase do?
A
rapidly decomposes acetylcholine
4
Q
How is Ca returned to the sarcoplasmic reticulum?
A
using ATP as an energy source
5
Q
What does ATP now bind to?
A
Myosin heads and the linkages between myosin and actin are broken
6
Q
What does actin and the muscle now do at the end of contraction?
A
Actin returns to its original position and the muscle relaxes
