Physiology of a skeletal muscle fibre Flashcards
1
Q
By what mechanism does muscle contraction occur
A
Sliding filament mechanism
2
Q
What does the sliding filament mechanism involve and what does it ressult in
A
The movement of sarcomere filament whcih results in the shortening of a muscle fibre
3
Q
What stimulates muscle contraction? What do the stimulants propogate?
A
somatic motor neurons which propogate action potentials which alter the plasma membrane
4
Q
How is an action potential triggered? What does this cause
A
If a voltage gated ion channel is opened which causes depolarisation of the plasma membrane
5
Q
How to action potentials reach the muscle
A
Via neuromuscular synapse
