Cutaneous nerve of arm

Cutaneous nerve of arm

Cutaneous nerves of the right arm. Anterior view.

The Cutaneous nerve of arm is a nerve in the human body that provides sensation to the skin of the arm. It is part of the peripheral nervous system and originates from the brachial plexus.

Anatomy

The cutaneous nerve of the arm is divided into two main branches: the medial cutaneous nerve of arm and the posterior cutaneous nerve of arm. These nerves are responsible for transmitting sensory information from the skin of the arm to the central nervous system.

Medial cutaneous nerve of arm

The medial cutaneous nerve of arm originates from the medial cord of the brachial plexus, with roots from the eighth cervical and first thoracic nerves. It provides sensation to the medial aspect of the arm.

Posterior cutaneous nerve of arm

The posterior cutaneous nerve of arm, also known as the dorsal cutaneous nerve, originates from the radial nerve. It provides sensation to the posterior aspect of the arm.

Clinical significance

Damage to the cutaneous nerves of the arm can result in a loss of sensation in the affected area. This can occur as a result of trauma, surgery, or certain medical conditions such as diabetes or peripheral neuropathy.

See also

• Nervous system
• Sensory nerve
• Dermatome (anatomy)