Nerves

The Anatomy of the Musculocutaneous Nerve 1X

The Anatomy of the Musculocutaneous Nerve

The musculocutaneous nerve is an important arm nerve. It provides muscle function for most upper arm muscles and feeling to much of the forearm. The musculocutaneous nerve is a peripheral nerve in your outer arm. It’s the terminal branch of the...

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Nerves

Nerves carry electrical signals from one part of the body to another, helping us move, breathe, and more. Explore how different nerves look and work.

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The Anatomy of the Tibial Nerve

The tibial nerve serves the muscles and skin of parts of the calf and foot. It's involved in a painful condition called tarsal tunnel syndrome. The tibial nerve is a branch of the sciatic nerve that runs down the back of your leg and into the...

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The Anatomy of the Ulnar Nerve

The ulnar nerve controls sensation and movement in sections of the arm and hand. It's the nerve that runs through the funny bone in your elbow. The ulnar nerve controls sensation and movement in sections of the arm and hand. It is best known for...

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The Anatomy of the Cranial Nerves

There are 12 pairs of cranial nerves that emerge from the brain stem. Each cranial nerve controls movement, sensation, or both. There are 12 pairs of cranial nerves. They each emerge separately from the brain stem, which is the lower part of the...

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Anatomy of the Long Thoracic Nerve

The long thoracic nerve supplies motor information to the serratus anterior muscle. Injury to this nerve may result in scapular winging. The long thoracic nerve is a long, thin, and relatively superficial nerve that courses from your cervical spine...

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The Anatomy of the Anterior Interosseus Nerve

The anterior interosseus nerve gives humans the opposable thumb and allows us to flex our fingers and hand. Damage is rare and may require surgery. The anterior interosseous nerve (AIN) is a branch of the median nerve, which is in your arm. The...

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The Anatomy of the Auriculotemporal Nerve

The auriculotemporal nerve serves the temporomandibular joint (TMJ), parotid gland, and parts of the ear and scalp. It's implicated in Frey syndrome. The auriculotemporal nerve is a branch of the mandibular nerve that provides sensation to...

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Anatomy of the Vagus Nerve

The vagus nerve controls many critical functions of the human body, and for this reason, medical science is seeking ways to modulate its actions. The vagus nerve is the longest nerve of the autonomic nervous system and is one of the most...

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The Anatomy of the Median Nerve

The median nerve is one of the major peripheral nerves of the upper extremity and is also responsible for carpal tunnel syndrome. Learn more. The median nerve is one of the major nerves supplying the upper extremity of the body. Beginning in the...

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The Anatomy of the Maxillary Nerve

The maxillary nerve runs along the upper jaw, middle of the face, nasal cavity, upper lip, and cheek. It is primarily involved in sensation. Tasked with carrying important information to the central nervous system (CNS), the maxillary nerve runs...

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