Sciatic nerve, Longest and Largest Nerve in the Body

November 30th, 2011 by admin | Filed under human body.

Sciatic nerve, also known as the ischiadic nerve or the ischiatic nerve, is the longest and largest nerve fiber in the bodies of humans and animals. In some human individual, it can measure up to 35 inches long and three-quarters of an inch in diameter, size of a pinkie finger, for most people.

Sciatic nerve in human body

Sciatic nerve in human body. Image via

In humans, the sciatic nerve starts in the lower back and reaches down to the big toe. As all nerves do, it collects information in the form of sensations and movement and sends that information through the spinal column to the brain. It supplies the whole of the skin of the leg, the muscles of the back of the thigh, and leg and foot. It enables movement and feelings in the thighs, knees, calves, ankles, feet and toes.

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