Long thoracic nerve
Transverse cervical nerve
Answer: A) Long thoracic nerve
Long thoracic nerve (C5–C7):
It branches off the C5–C7 roots, descends posteriorly to the roots of the plexus and the axillary artery and along the lateral surface of the serratus anterior muscle, with the lateral thoracic artery, while supplying the muscle.
The long thoracic nerve is one of the few nerves found superficial to the serratus anterior muscle.