Final answer:
The axillary approach blocks the brachial plexus at the level of the axilla. It targets the branches of the brachial plexus that supply the arm, such as the median, ulnar, and radial nerves. The axillary nerve is often missed by axillary nerve block.
Step-by-step explanation:
The axillary approach blocks the brachial plexus at the level of the axilla, or armpit. This approach targets the branches of the brachial plexus that supply the arm, such as the median, ulnar, and radial nerves. The axillary nerve, which innervates the shoulder and upper arm, is often missed by axillary nerve block.