5 Questions
What is the network of nerves formed by the anterior rami of the lower four cervical nerves and the first thoracic nerve?
Brachial plexus
Which nerve plexus is primarily responsible for the motor and sensory innervation of the upper limb?
Brachial plexus
Which part of the body receives signals from the nerves that make up the brachial plexus?
Upper limb
Injury to which nerve plexus can result in symptoms like weakness, numbness, and impaired movement of the upper limb?
Brachial plexus
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?
Brachial plexus injury
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.
Test your knowledge about the network of nerves consisting of the lower four cervical nerves and the first thoracic nerve. Learn about the motor and sensory innervation of the upper limb, as well as common injuries and conditions associated with the brachial plexus.
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