Download Muscle Structure & Function

SO
FOG
FG
Colour
RED
RED / PINK
WHITE
Size
SMALL
INTERMEDIATE
LARGE
No of Mitochondria
MANY
MANY
FEW
No of Capillaries
MANY
MANY
FEW
Glycogen Stores
LOW
INTERMEDIATE
HIGH
Contractile Speed
SLOW
FAST
FAST
Contractile Strength
LOW
INTERMEDIATE
HIGH
Fatigue Resistance
HIGH
MODERATE
LOW
Aerobic Capacity
HIGH
MODERATE
LOW
Anaerobic Capacity
LOW
HIGH
HIGH
ATHLETE
MARATHON
1500 M
100 M
ACTIVITIES
ENDURANCE
MULTI SPRINT
POWER
STRUCTURE
FUNCTION
SO
FOG
FG
Colour
RED
RED / PINK
WHITE
Size
SMALL
INTERMEDIATE
LARGE
No of Mitochondria
MANY
MANY
FEW
No of Capillaries
MANY
MANY
FEW
Glycogen Stores
LOW
INTERMEDIATE
HIGH
Contractile Speed
SLOW
FAST
FAST
Contractile Strength
LOW
INTERMEDIATE
HIGH
Fatigue Resistance
HIGH
MODERATE
LOW
Aerobic Capacity
HIGH
MODERATE
LOW
Anaerobic Capacity
LOW
HIGH
HIGH
ATHLETE
MARATHON
1500 M
100 M
ACTIVITIES
ENDURANCE
MULTI SPRINT
POWER
STRUCTURE
FUNCTION
Origin
Attach Muscle to Bone
End of muscle that is
stationary during contraction
End of muscle that moves
during contraction
Insertion
For muscles to work and cause movement they need to contract.
There are different types of contraction:
Force produced without
movement
Forced produced with movement
Eg tug or war / rugby scrum
Muscle Shortens
Muscle Lengthens
Most common
type of
contraction
Braking
action
Muscle can not push, they can only pull
This means that as one muscle contracts and brings bones together,
another is need to pull them back apart.
For the body to work effectively muscles must work together
Depending on the movement, muscles can adopt a variety of roles:
The muscle that contracts to start the movement
The muscle that relaxes to allow the movement
The muscle that stabilises the joint while the
movement takes place
The mechanism by which muscle fibres contract
Muscle Filaments slide together, shortening fibre length