Zusammenfassung der Ressource
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