Muscle fibres

Question 1

Different types of muscles fibres

Answer 1

Type 1 - slow oxidative
Type 2a - fast oxidative
Type 2x - fast glycolytic

Question 2

Structural properties of Type 1

Answer 2

small
red
lots of mitochondria and capillaries
low fibres per motor neurone

Question 3

Function properties of Type 1

Answer 3

high aerobic capacity
low anaerobic capacity
slow speed of contraction
high fatigue resistant
low force

Question 4

Structural properties of Type 2a

Answer 4

medium
pink
moderate mitocondria and capillaries
high fibres per motor neurone

Question 5

Function properties of Type 2a

Answer 5

moderate aerobic capacity
high anaerobic capacity
fast speed of contraction
medium fatigue resistant
high force

Question 6

Structural properties of Type 2x

Answer 6

large
white
low mitochondria and capillaries
very high fibres per motor neurone

Question 7

Function properties of Type 2x

Answer 7

low aerobic capacity
Very high anaerobic capacity
Very fast speed of contraction
Low fatigue resistant
Very high force