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A level PE > Muscle fibre types > Flashcards

Muscle fibre types Flashcards

1
Q

What is the name of the type 1 muscle fibre

A

Slow oxidative

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2
Q

What is the name of the type 2a muscle fibre

A

Fast oxidative glycolytic

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3
Q

What is the name of the type 2b muscle fibre

A

Fast glycolytic

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4
Q

What colours are type 1/2a/2b muscle fibres

A

Red/red to pink/white(pale)

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5
Q

What are the sizes of type 1/2a/2b muscle fibre types

A

Small/intermediate/large

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6
Q

What are the no. of mitochondria in type 1/2a/2b muscle fibres

A

Many/many/few

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7
Q

What are the no. of capillaries

A

Many/many/few

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8
Q

What is the myoglobin concentration of type 1/2a/2b muscle fibres

A

High/high/low

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9
Q

What are the glycogen stores for type 1/2a/2b muscle fibres

A

Low/intermediate/high

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10
Q

What is the contractile speed for type 1/2a/2b muscle fibres

A

Slow/fast/fast

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11
Q

What is the contractile strength for type 1/2a/2b muscle fibres

A

Low/intermediate/high

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12
Q

What is the fatigue resistance for type 1/2a/2b muscle fibres

A

High/moderate/low

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13
Q

What is the aerobic capacity for type 1/2a/2b muscle fibres

A

High/moderate/low

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14
Q

What is the anaerobic capacity for type 1/2a/2b muscle fibres

A

Low/high/high

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15
Q

Example of type 1/2a/2b muscle fibres (gastrocnemius)

A

Gastrocnemius of a marathon runner/gastrocnemius of 1500m runner/gastrocnemius of 110m hurdler

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16
Q

Best suited activities for type 1 muscle fibres

A

Endurance activities

17
Q

Best suited activities for type 2a muscle fibres

A

Activities involving walking, running and sprinting

18
Q

Best suited activities for type 2b muscle fibres

A

Speed/power type activities

19
Q

What is the role of mitochondria

A

Provides large amounts of energy using O2

20
Q

What is the role of capillaries

A

Provides blood to muscles, site of gas exchange

21
Q

What is myoglobin

A

O2 carrier/storage in muscle fibres (strong attraction to CO2)

22
Q

What influences colour of muscle fibre types

A

More myoglobin = more O2 present in cell = more red

23
Q

How long does it take for type 1 muscle fibres to be recruited

A

90 seconds

24
Q

How often can type 1 muscle fibres be used

A

Daily as fibre damage is minimal - recover quickly

25
Q

How long does it take for type 2a/b muscle fibres to be recruited

A

2-20 seconds near muscle exhaustion where maximal effort is required

26
Q

What type of muscle fibres cause DOMS

A level PE (62 decks)

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