Soc 13

Question 1

What are muscle fibers and what types do they divide into?

Answer 1

Muscle fibers male up voluntary muscle; divided into type I, type IIa, type IIx

Question 2

Type I muscle fibers

Answer 2

Slow twitch muscle fibers suited for aerobic training or competition such as a marathon or long distance race. These fibers have a high resistance to fatigue but are very slow

Question 3

Type IIa

Answer 3

Fast twitch muscle fibers used in high intensity training or competition, can be improved by endurance training to resist fatigue

Question 4

Type IIx

Answer 4

Fast twich muscle fibers used in anaerobic work which generate much greater force than other types of fibre, fatigue quickly. They are generally used in a short race such as a 50m sprint

Question 5

Myoglobin

Answer 5

A red pigment that transports oxygen to the muscles

Question 6

Antagonistic pairs

Answer 6

Muscles that work together to create movement