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384499
Muscular system Revision
Description
Mind Map on Muscular system Revision, created by xlilyxjonesx on 24/11/2013.
Mind Map by
xlilyxjonesx
, updated more than 1 year ago
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xlilyxjonesx
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Resource summary
Muscular system Revision
Short term effects of exercise
Muscle fatigue.
Tiredness.
Can become painful.
Produce carbon dioxide through respiration.
Increase in temperature.
Can produce a build up in lactic acid.
Use more oxygen.
Long term effects of exercise
Increase in size and density.
Hypertrophy
Increase in strength.
More capillaries in muscles.
Greater resistance to fatigue.
Increase in flexibility around the joint.
Involuntary muscles become stronger
Stronger heart for better circulation
Effects on performance
More capillaries
Enables better endurance
Good for long distance runners.
Hypertrophy
Good for rugby players to break a tackle
Bad for ballet dancers
Doesn't fit what they should look like
Increase in flexibility
Good for dancers
Stronger heart
Sustain intense exercise for longer
3 types of muscles
Involuntary
smooth, organ muscles.
Never stop working
Voluntary
Muscles found in the body and the joints
Cardiac
Only found in heart.
Another type of involuntary
They aren't consciously moving.
Major muscles
Trapesius
Rotates shoulder
Deltoid
Abducts upper arm
Latissimus dorsi
Rotates upper arm
abdominals
Flexion at hip
Bicep
Flexion at arm
Tricep
Extension of arm
Quadriceps
Extension of knee.
Hamstrings
Flexion of leg at knee
Gastrocnemius
Flexion of foot
Pectorals
Adducts the arm
Gluteus Maximus
Extension of upper leg
Muscle Fibres
Slow Twitch
Are deep red, contract slowly and work for long periods of time.
60% slow 40% fast in average person
Fast Twitch
Light red, powerful but tire easily and contract quickly.
Functions
Generate heat
Blood circulation
Good posture
Movement
Glycogen storage
Protection
Muscle tone and posture
When muscles are in a continuous state of tension
Needed to stay upright
Helps good posture
Requires energy
How we hold our body whilst still or in movement.
Antagonistic pairs
Muscles work in pair against each other
One muscle contracts whilst the other relaxes.
The agonist is the prime mover
The antagonist is the relaxed muscle.
Muscle contractions
Isontonic
Muscles change length whilst working.
Tonic water- bubbles move****
Eg. Running
Isometric
Muscle contract but the body is still
Eg. hand stand
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