The axillary nerve typically carries roots from which levels?

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Study for the Muscle Actions and Functions – Anatomy and Movement Test. Equip yourself with multiple choice questions, each with detailed explanations and hints. Prepare confidently for your exam!

Multiple Choice

The axillary nerve typically carries roots from which levels?

Explanation:
The axillary nerve comes off the posterior cord of the brachial plexus, which carries fibers mainly from the C5 and C6 root levels. Those two roots are the primary contributors, so the typical roots are C5-C6. This matches the nerve’s role in innervating the deltoid and teres minor (and providing sensation over the lateral shoulder). While there can be small variations in some individuals, the standard teaching is C5-C6. The other ranges either add a level not normally involved or omit a key contributor, so they don’t fit as the typical roots.

The axillary nerve comes off the posterior cord of the brachial plexus, which carries fibers mainly from the C5 and C6 root levels. Those two roots are the primary contributors, so the typical roots are C5-C6. This matches the nerve’s role in innervating the deltoid and teres minor (and providing sensation over the lateral shoulder). While there can be small variations in some individuals, the standard teaching is C5-C6. The other ranges either add a level not normally involved or omit a key contributor, so they don’t fit as the typical roots.

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