Readers ask: How To Draw Brachial Plexus?


What are the symptoms of brachial plexus injury?

Common symptoms of brachial plexus injuries are:

  • Numbness or loss of feeling in the hand or arm.
  • Inability to control or move the shoulder, arm, wrist or hand.
  • An arm that hangs limply.
  • Burning, stinging or severe and sudden pain in the shoulder or arm.

What is Erb’s paralysis?

Erb’s palsy is a form of brachial plexus palsy. It is named for one of the doctors who first described this condition, Wilhelm Erb. The brachial plexus (BRAY-key-el PLEK-sis) is a network of nerves near the neck that give rise to all the nerves of the arm.

What are the branches of the brachial plexus?

The 5 terminal branches of the brachial plexus are the musculocutaneous, median, ulnar, axillary, and radial nerves.

What muscles do the brachial plexus innervate?

Nerve fibers from the anterior division of the brachial plexus are contained in the musculocutaneous, median, and ulnar nerves. These nerves innervate the anterior muscles of the upper arm, forearm, and intrinsic muscles.

How does the brachial plexus work?

The brachial plexus is the network of nerves that sends signals from your spinal cord to your shoulder, arm and hand. A brachial plexus injury occurs when these nerves are stretched, compressed, or in the most serious cases, ripped apart or torn away from the spinal cord.

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What are the cords of the brachial plexus?

The anterior division of the lower trunk forms the medial cord, which gives off the medial pectoral nerve (C8, T1), the medial brachial cutaneous nerve (T1), and the medial antebrachial cutaneous nerve (C8, T1). The posterior divisions from each of the 3 trunks unite to form the posterior cord.

What is Musculocutaneous nerve?

The musculocutaneous nerve innervates the three muscles of the anterior compartment of the arm: the coracobrachialis, biceps brachii, and brachialis. It is also responsible for cutaneous innervation of the lateral forearm.

What muscles are innervated by the radial nerve?

The radial nerve and its branches provide innervation the following muscles (See Structure and Function for specific nerve branch innervations and muscle actions)[7]:

  • Abductor pollicis longus.
  • Anconeus.
  • Brachioradialis.
  • Extensor carpi radialis brevis.
  • Extensor carpi radialis longus.
  • Extensor carpi ulnaris.

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