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What is the network of nerves formed by the anterior rami of the lower four cervical nerves and the first thoracic nerve?
What is the network of nerves formed by the anterior rami of the lower four cervical nerves and the first thoracic nerve?
- Femoral nerve
- Sciatic nerve
- Optic nerve
- Brachial plexus (correct)
Which nerve plexus is primarily responsible for the motor and sensory innervation of the upper limb?
Which nerve plexus is primarily responsible for the motor and sensory innervation of the upper limb?
- Cervical plexus
- Brachial plexus (correct)
- Sacral plexus
- Lumbar plexus
Which part of the body receives signals from the nerves that make up the brachial plexus?
Which part of the body receives signals from the nerves that make up the brachial plexus?
- Abdomen
- Lower limb
- Upper limb (correct)
- Head
Injury to which nerve plexus can result in symptoms like weakness, numbness, and impaired movement of the upper limb?
Injury to which nerve plexus can result in symptoms like weakness, numbness, and impaired movement of the upper limb?
Which term describes a condition where the brachial plexus nerves are stretched or torn due to trauma, leading to weakness or loss of function in the affected arm?
Which term describes a condition where the brachial plexus nerves are stretched or torn due to trauma, leading to weakness or loss of function in the affected arm?
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Study Notes
Brachial Plexus
- The brachial plexus is a network of nerves formed by the anterior rami of the lower four cervical nerves (C5-C8) and the first thoracic nerve (T1).
- The brachial plexus is primarily responsible for the motor and sensory innervation of the upper limb.
- Signals from the nerves that make up the brachial plexus are received by the upper limb (arm, forearm, hand, etc.).
- Injury to the brachial plexus can result in symptoms like weakness, numbness, and impaired movement of the upper limb.
- Brachial plexus injury or trauma can cause stretching or tearing of the nerves, leading to weakness or loss of function in the affected arm, a condition known as brachial plexopathy.
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