What are the 4 nerves that come off of the brachial plexus that innervate the forearm and hand?

Brachial plexus with terminal branches labeled. MC is musculocutaneous (nerve), AXI is axillary, RAD is radial, MED is median, and ULN is ulnar. Musculocutaneous nerve. Axillary and radial nerves.

What muscles do the nerves of 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.

What nerves does Erbs palsy affect?

Erb’s palsy is a birth injury affecting the brachial plexus nerves in the neck, causing weakness or paralysis of the arm. According to the American Academy of Orthopedic Surgeons (AAOS), 1 out of 1,000 babies is born with Erb’s palsy. Most children will regain movement and feeling in the affected arm.

What are the 5 terminal nerves of the brachial plexus?

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

How many nerves are in the brachial plexus?

Brachial Plexus Anatomy The brachial plexus ends in five major nerve branches that extend down the arm: Musculocutaneous nerve: Originates from nerve roots C5-C7 and flexes muscles in the upper arm, at both the shoulder and elbow.

Which of the following nerves is part of the brachial plexus?

Brachial plexus

Roots	C5, C6, C7, C8, T1
Cords	Lateral Medial Posterior
Terminal branches	Musculocutaneous nerve Axillary nerve Radial nerve Median nerve Ulnar nerve
Innervation	Complete sensory and motor innervation of the arm

What does C2 nerve innervate?

Lesser occipital nerve – innervates the skin and the scalp posterosuperior to the auricle (C2) Great auricular nerve – innervates skin near concha auricle (outer ear) and external acoustic meatus (ear canal) (C2&C3)

What is Erb Duchenne syndrome?

Erb’s palsy or Erb–Duchenne palsy is a form of obstetric brachial plexus palsy. It occurs when there’s an injury to the brachial plexus, specifically the upper brachial plexus at birth. The injury can either stretch, rupture or avulse the roots of the plexus from the spinal cord.

What is Erb’s syndrome?

Erb’s palsy is a condition characterized by arm weakness and loss of motion. It can occur in both infants and adults. It’s typically caused by a physical injury during newborn delivery or by traumatic force downward on the upper arm and shoulder, damaging the brachial plexus.

What are the 5 major nerve Innervations of shoulder arm?

Branches. The fifth and final level of the brachial plexus are the five nerves that feed the shoulder and arm called “branches.” These five branches are named the musculocutaneous, axillary, radial, median, and ulnar nerves.

Is the ulnar nerve Part of the brachial plexus?

Ulnar nerve The C8 and T1 roots are part of the brachial plexus that travels from the cervical spine, under the clavicle, through the armpit (axilla), and down the inside of the arm to the inner elbow.