Neuromuscular Junction Flashcards
1
Q
What occurs on the presynaptic knob of a neuromuscular junction?
A
- Depolarisation
- Calcium channels open
- Calcium enters the channels
- Calcium binds to the vesicles
- Vesicles move towards the cell membrane
- ACH is released by exocytosis
2
Q
What happens at the muscle?
A
- aceytlcholine binds to receptors on the sarcolemma
- depolarisation travels down the tubules
- Calcium is released by sarcoplasmic reticulum
- Calcium causes muscle contraction
- aceytcholine broken down
