Muscle fibres

Question 1

What is aerobic exercise?

Answer 1

Low intensity, high duration exercise in presence of oxygen

Question 2

What is anaerobic exercise?

Answer 2

High intensity, low duration exercise with absence of oxygen

Question 3

What are type 1 fibres called?

Answer 3

Slow twitch oxidative fibres

Question 4

What are type 2a fibres called?

Answer 4

Fast twitch oxidative glycolytic fibres

Question 5

What are type 2b fibres called?

Answer 5

Fast twitch glycolytic fibres

Question 6

Example of when type 1 fibres are used

Answer 6

Marathon running

Question 7

Examples of when type 2a fibres are used

Answer 7

800 metres, 1500 metres, 200 m freestyle

Question 8

Examples of when 2b fibres are used

Answer 8

Shot put, 100 m sprint

Question 9

What is a motor neuron?

Answer 9

A nerve cell which conducts a nerve impulse to a group of muscle fibres

Question 10

Neuron size in the fibres

Answer 10

1-small
2a-large
2b-large

Question 11

Fibres per neuron in the fibres

Answer 11

1-few
2a-many
2b-many

Question 12

Capillary density in the fibres

Answer 12

1-high
2a-high
2b-low

Question 13

Mitochondria density in the fibres

Answer 13

1-high
2a-moderate
2b-low

Question 14

Myoglobin density in the fibres

Answer 14

1-high
2a=moderate
2b-low

Question 15

Phosphocreatine stores in the fibres

Answer 15

1-low
2a-high
2b-high

Question 16

Speed of contraction in the fibres

Answer 16

1-slow
2a-fast
2b-fast

Question 17

Force of contraction in the fibres

Answer 17

1-low
2a-high
2b-high

Question 18

Fatigue resistance in the fibres

Answer 18

1-high
2a-moderate
2b-low

Question 19

Aerobic capacity in the fibres

Answer 19

1-high
2a-moderate
2b-low

Question 20

Anaerobic capacity in the fibres

Answer 20

1-low
2a-moderate
2b-high