LKnative - Musculocutaneous nerve block

2 – Anatomy: The origin of the musculocutaneous nerve

The musculocutaneous nerve originates from the lateral cord of the brachial plexus and receives nerve fibres – via the anterior divisions of the superior and the medial trunks – from the anterior rami of the spinal nerve roots C5-C7

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Musculocutaneous nerve (MC), lateral cord (LC), superior trunk (ST), medial trunk (MT), anterior rami of spinal nerve roots C5-C7
The dark-brown colour of the MC nerve can be tracked backwards to the spinal nerve roots