Soc 14: Muscle Fibres Flashcards
(6 cards)
1
Q
What is the definition of muscle fibre
A
Make up voluntary (skeletal) muscles; divided into type I, type IIa and type IIx
2
Q
Type I muscle fibres
A
Slow twitch muscle fibre; suited to low intensity work, for example marathon runners
3
Q
Type II
A
Fast twitch muscle fibres; Type II is divided into two different types
-type IIa
-type IIx
4
Q
Type IIa
A
Fast twitch muscle fibres used in anaerobic work; can be improved through endurance training to increase their resistance to fatigue
5
Q
Type IIx
A
Fast twitch muscle fibres used in anaerobic work and can generate much greater force than other fibre types, but fatigue quickly
6
Q
What is myoglobin
A
A red pigment that can transport oxygen to the muscles
