Which nerves supply the muscles of the upper arm?

This article will focus on the five terminal nerve branches of the brachial plexus which supply the upper limb. These are the musculocutaneous nerve, the axillary nerve, the radial nerve, the median nerve and the ulnar nerve.

Which two nerves supply the muscles of the upper arm?


  • The axillary nerve innervates the deltoid and teres minor.
  • The musculocutaneous nerve is responsible for innervating the flexors of the arm, including the biceps brachii, coracobrachialis, and the medial aspect of the brachialis.

What nerve Innervates the upper arm?

The axillary nerve is a branch of the brachial plexus which contains nerve fibres from C5 and C6, it provides sensory innervation to the skin on the “regimental badge” area of the upper arm and motor innervation to the deltoid and teres minor muscles.

What nerve Innervates the bicep muscle?

The biceps brachii muscle receives its innervation from the C5 and C6 fibers of the musculocutaneous nerve. The brachialis muscle originates on the distal portion of the anterior humerus, and inserts on both the coronoid process and tuberosity of the ulna.

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What are the main nerves of upper limb?

The nerves of the upper limb originate from the brachial plexus and include the musculocutaneous, axillary, median, radial and ulnar nerves.

What are the nerves of the upper limb?

Nerves of the Upper Limb

  • Musculocutaneous Nerve.
  • Leprosy.
  • Radial Nerve.
  • Medial Cord.
  • Posterior Cord.
  • Median Nerve.
  • Brachial Plexus.
  • Lateral Cord.

What is supraclavicular nerve?

The supraclavicular nerve is a superficial sensory nerve that crosses the clavicle and provides sensation over the clavicle, anteromedial shoulder, and proximal chest [5, 8].

Is the Suprascapular nerve a peripheral nerve?

The suprascapular nerve is a peripheral nerve of the shoulder and arm. It arises from the upper portion of the brachial plexus, which is a network of nerves that stretches across your check from your neck down to your armpit.

What does Thoracodorsal nerve supply?

The thoracodorsal nerve is a pure motor nerve that innervates the latissimus dorsi muscle. … The primary blood supply of the latissimus dorsi muscle is the thoracodorsal artery. The dorsal divisions of T6 to T12 provide the sensory innervation of the skin of the latissimus dorsi muscle.

What nerve causes bicep pain?

Brachial plexus injury

The brachial plexus is a group of nerves in the neck, arm, and hand that are responsible for feeling and movement. Damage to the musculocutaneous nerve, which runs down the length of the arm, can result in bicep pain and weakness.

Is the musculocutaneous nerve a peripheral nerve?

The musculocutaneous nerve is a peripheral nerve in your outer arm. It’s the terminal branch of the lateral cord, which is part of the brachial plexus that extends from your neck to your armpit.

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What muscles are in upper arm?

Upper arm muscles

  • Biceps brachii. Often referred to as your biceps, this muscle contains two heads that start at the front and back of your shoulder before joining together at your elbow. …
  • Brachialis. This muscle lies underneath your biceps. …
  • Coracobrachialis. This muscle is located near your shoulder.

What muscle is on outside of upper arm?

The biceps tendon attaches the large muscle on the front side of your upper arm – the biceps – to the bones in the shoulder. There are two tendons called the long head and short head.