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Questions and Answers
Which nerves originate from the anterior rami of the brachial plexus?
Which nerves originate from the anterior rami of the brachial plexus?
- C6, C7, C8, T1, T2
- C5, C6, C7, C8, T1 (correct)
- C2 and C3
- C3, C4, C5
What could be a potential consequence of phrenic nerve damage due to cervical plexus compression?
What could be a potential consequence of phrenic nerve damage due to cervical plexus compression?
- Loss of sensation in the upper limb
- Respiratory failure (correct)
- Inability to flex the elbow
- Weakness in shoulder abduction
Which nerve is considered the major branch of the brachial plexus?
Which nerve is considered the major branch of the brachial plexus?
- Radial nerve (correct)
- Axillary nerve
- Medial nerve
- Ulnar nerve
Where is the brachial plexus located in relation to subclavian vessels?
Where is the brachial plexus located in relation to subclavian vessels?
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Which of the following is not a branch of the brachial plexus?
Which of the following is not a branch of the brachial plexus?
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Study Notes
Spinal Nerve and Brachial Plexus
- The phrenic nerve originates from the anterior rami of C3, C4, and C5 spinal nerves.
- The phrenic nerve innervates the diaphragm, which is the primary muscle for breathing.
- Damage or compression of the cervical plexus can lead to respiratory failure due to phrenic nerve involvement.
- The brachial plexus is a network of nerves formed by the anterior rami of spinal nerves C5 through T1.
- The brachial plexus is located just below the subclavian vessels.
- The brachial plexus supplies the muscles and skin of the upper limb.
- The axillary nerve, radial nerve, ulnar nerve, and medial nerve are branches of the brachial plexus.
- The radial nerve is the largest branch of the brachial plexus.
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