Page 49 - ASOP ROT Study Guide
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3 . 5 Nerve Supply
Muscles contract in response to stimuli that mainly originate in the brain. The stimuli are carried to
the muscles by special fibers called nerves. These come from various parts of the brain and pass
down the center of the spine in the spinal cord. The nerves of the brain and spinal cord are part of
the central nervous system or CNS. Once the nerves leave the spinal cord and branch out all over
the body they are known as peripheral nerves and form part of the peripheral nervous system or
PNS.
The major peripheral nerves supplying the lower limb are:
♦ the sciatic nerve which supplies the extensors,
♦ the obturator nerve which supplies the adductors, and
♦ the femoral nerve which supplies the flexors.
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