SOC:14 Muscle Fibres

Question 1

Muscle fibers

Answer 1

Make up voluntary (skeletal) muscle; divided i to type I, type IIa and type IIx

Question 2

Type I

Answer 2

Slow twitch muscle fibres; suited to low intensity work as they can be used for a long period without fatiguing

Question 3

Type IIa

Answer 3

Fast twitch muscle fibres used in anaerobic work; can be improved through endurance training to increase their resistance to fatigue

Question 4

Type IIx

Answer 4

Fast twitch muscle fibres used in anaerobic and can generate much greater force than other fibre types, but fatigue quickly

Question 5

Myoglobin

Answer 5

A red pigment that transports oxygen to the muscles