SOC 14: The Muscular System Flashcards
1
Q
What are muscle fibres?
A
They make up voluntary muscle; divided into type I, type IIa and type IIx
2
Q
What is a type I muscle fibre?
A
Slow twitch muscle fibres suitable for low intensity work e.g. marathon running as they can be used for long periods of time without fatiguing.
3
Q
What is a type IIa muscle fibre?
A
Fast twitch muscle fibres used in anaerobic work; can be improved through endurance training to increase their resistance to fatigue.
4
Q
What is a type IIx muscle fibre?
A
Fast twitch muscle fibres used in anaerobic work and can generate much greater force than other fibre types, but fatigue quickly.
5
Q
What is myoglobin?
A
A red pigment that transports oxygen to the muscles
