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What is Shrugging muscle among the following? and explain in detail?
MuscleNerve supplyActionsTrapeziusSpinal pa of the accessory nerve is motor.Branches from C3, C4 are proprioceptiveUpper fibers act with levator scapulae and elevatethe scapula, as in shruggingMiddle fibers act with rhomboids and retract thescapulaUpper and lower fibers act with serratus anterior and rotate the scapula forwards around the chest wall thus playing an impoant role in the abduction of the arm beyond 90oSteadies the scapulaRef: Chaurasia; Volume 1; 6th edition; Page no: 62