5 Questions
Where does the axillary nerve arise from?
From the posterior cord of the brachial plexus
In the axilla, where does the axillary nerve lie in relation to the axillary artery?
Behind the axillary artery
Where does the axillary nerve end by curving laterally?
Around the surgical neck of humerus
Which muscle receives a muscular branch from the anterior branch of the axillary nerve?
Deltoid muscle
Which nerve provides cutaneous innervation to the skin overlying the lower part of deltoid?
Upper lateral cutaneous nerve of the arm
Study Notes
Axillary Nerve
- Arises from the posterior cord of the brachial plexus
Relation to Axillary Artery
- Lies posterior and inferior to the axillary artery in the axilla
Course and Termination
- Ends by curving laterally around the surgical neck of the humerus
Muscle Innervation
- The anterior branch of the axillary nerve provides a muscular branch to the deltoid muscle
Cutaneous Innervation
- The upper lateral cutaneous nerve of the arm provides cutaneous innervation to the skin overlying the lower part of the deltoid
Test your knowledge of the anatomy of the axillary nerve, including its origin, course, relations, and branches. This quiz covers key information about the axillary nerve's anatomical features.
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