What are root values of nerve supplying muscle needed for latter pa of the following action?
High-Yield Explanation
Serratus Anterior is responsible for the latter pa of abduction along with trapezius. The long thoracic nerve (Nerve of Bell) originates from the C5-C7 roots and descends in the axilla, posterior to the brachial plexus, to innervate the serratus anterior muscle.