The long thoracic nerveserves serratus ventralis. It is found on the superficial side of this muscle. It is a lateral branch of the anterior rami of C5, C6, and C7. This nerve has been known by students as the Paul McCartney nerve because he named it for his famous song "The Long Thoracic Nerve", which was on an early release of the Beatles album "Let It Be". The name didn't catch on and I think he may have changed the name later.
by William C. Johnson II
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