Download Core of Body

Core of Body
• The body's core muscles are the
foundation for all other movement. The
muscles of the torso stabilize the spine
and provide a solid foundation for
movement in the extremities.
• These core muscles lie deep within the
torso. They generally attach to the spine,
pelvis and muscles that support the
scapula.
• When these muscles contract, we stabilize
the spine, pelvis and shoulders and create
a solid base of support. We are then able
to generate powerful movements of the
extremities.
• Many people will naturally have an
imbalance between the strength of their
abdominal muscles and the lower back
muscles.
• Origin – the muscular attachment
on the non-moving bone
• Insertion – the muscular
attachment on the moving bone
• All muscles are controlled by
nerves [innervation]
• All muscles have a good blood
supply
PIRIFORMIS
• from Latin piriformis = "pear shaped")
• flat muscle, pyramidal in shape, lying
almost parallel with the posterior margin of
the Gluteus medius
• Origin: anterior sacrum
• Insertion: superior border of the greater
trochanter of femur
• Laterally rotates and abducts thigh @ hip jt
Sacrum: pelvic surface.
(Attachment for Piriformis
identified as red outline at
bottom right.)
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