contracting a muscle Flashcards
1
Q
activate motor neuron->
A
impulse
2
Q
- Release Ach from motor
A
binds to receptor at neurotransmitter junction (on the muscle)
3
Q
- Generate A.P(impulse) in the
A
skeletal muscle
4
Q
4.travels across the
A
sarcolemma and t tubules
5
Q
- release calcium from sarcoplasmic reticulum into the
A
sarcoplasm
6
Q
- Calcium binds to troponin
A
changes shape
7
Q
7.slide tropmyosin over
A
express active site on actin
8
Q
8.myosin heads are attached and bind to the
A
active sites on actin
9
Q
- then myosin pulls actin over it
A
power stroke
10
Q
10.ATP causes myosin head to be released from
A
actin and reset
11
Q
- sarcomere shortens
A
force is generated
12
Q
troponin
A
holds tropmysoin in place
13
Q
trpomyosin
A
block active site