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Questions and Answers
Which of the following spinal cord levels contributes to the posterior cord of the brachial plexus?
What is the main function of the posterior cord of the brachial plexus?
Which of the following nerves does not receive fibers from the posterior cord of the brachial plexus?
What is the significance of the posterior cord of the brachial plexus in clinical practice?
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Which of the following is a characteristic of the fibers carried by the posterior cord of the brachial plexus?
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Study Notes
Spinal Cord Levels and Brachial Plexus
- The posterior cord of the brachial plexus is contributed by spinal cord levels C5-T1.
- The main function of the posterior cord of the brachial plexus is to supply the extensor muscles of the upper limb.
Composition of Posterior Cord
- The posterior cord of the brachial plexus gives rise to the axillary nerve and the radial nerve.
- The posterior cord of the brachial plexus does not give rise to the musculocutaneous nerve.
Clinical Significance
- The posterior cord of the brachial plexus is significant in clinical practice because it is responsible for the motor function of the upper limb, particularly in extending the elbow and wrist.
Characteristics of Posterior Cord Fibers
- The fibers carried by the posterior cord of the brachial plexus are primarily motor fibers, responsible for the extension of the upper limb.
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Description
Test your knowledge of the brachial plexus, including the posterior cord, spinal cord levels, and nerve fibers. Learn about the main function and significance of the posterior cord in clinical practice.
