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Help in the circulation of Give us our individual shape.
our blood.
Protect and keep in place our
abdominal organs.
Enable us to move our body OUR MUSCLES:
parts.
Generate body heat when they
Enable us to maintain contract.
good posture.
TYPES OF MUSCLE
-Skeletal/Striped or Voluntary Muscle
-Smooth or Involuntary Muscles.
-Cardiac Muscle…read more

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SKELETAL or VOLUNTARY MUSCLES
They are under our conscious control.
We instruct them to
perform actions such
as walking, running and jumping.
Main voluntary muscles...…read more

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MUSCLE MAIN ACTION(S)
Deltoid Raises your arm sideways at the shoulder
Biceps Bends your arm at the elbow
Abdominals Pull in your abdomen. Flex your trunk so you can bend
forward
Quadriceps Straighten your leg at the knee and keep it straight when
you stand
Pectorals Raises your arm at the shoulder. Draws it across your chest
Latissimus dorsi Pulls your arm down at the shoulder. Draws it behind your
back
Trapezius Holds and rotates your shoulders. Moves your head back and
sideways
Triceps Straightens your arm at the elbow
Gluteals Pull your leg back at the hip. Raise it sideways at the hip.
Gluteus maximus is the biggest
Hamstrings Bend your leg at the knee
gastrocnemius Straightens the ankle joint so you can stand on tiptoes…read more

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SMOOTH or
INVOLUNTARY
MUSCLES
These muscles work automatically e.g.
Muscles of the digestive system.
It is ONLY found in the heart.
It contracts regularly, continuously
and without tiring.
CARDIAC
MUSCLE…read more

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HOW DO OUR MUSCLES WORK?
There are 3 main types of muscular contraction:
· Isotonic and concentric
· Isotonic and eccentric
· Isometric…read more

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