Which of the following nerves does not arise from the brachial plexus?

Step 1: Define the Problem

Identify which nerve among the options provided does not originate from the brachial plexus.

Step 2: Break Down the Problem

• Understand the structure and function of the brachial plexus.
• List the nerves that typically arise from the brachial plexus.
• Compare the list with the options provided in the question.

Step 3: Apply Relevant Concepts

• The brachial plexus is a network of nerves that originate from the spinal cord in the neck and travel down the arm. It typically gives rise to the following nerves:
  • Musculocutaneous nerve
  • Axillary nerve
  • Radial nerve
  • Median nerve
  • Ulnar nerve

Step 4: Analysis, Verify and Summarize

• Analyze the list of nerves that arise from the brachial plexus.
• Verify which nerve in the options does not match the typical nerves arising from the brachial plexus.

Final Answer

The nerve that does not arise from the brachial plexus is the phrenic nerve.