ANATOMY: Illustration of Back Muscles. How do muscles work? When you want to move, your brain sends a message through the nerves to the correct muscle. When the message gets to the muscle, chemicals inside the muscle cause the muscle to shorten. Because the muscle is attached to the bone, this shortening pulls on the bone. If the strength of this shortening is strong enough, the bone, and therefore the body, moves.

How to Relieve Back Pain

ANATOMY: Illustration of Back Muscles. How do muscles work? When you want to move, your brain sends a message through the nerves to the correct muscle. When the message gets to the muscle, chemicals inside the muscle cause the muscle to shorten. Because the muscle is attached to the bone, this shortening pulls on the bone. If the strength of this shortening is strong enough, the bone, and therefore the body, moves.

John William Waterhouse, Hylas and the Nymphs (detail), 1896

John William Waterhouse, Hylas and the Nymphs (detail), 1896

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http://mosletstudio.tumblr.com/ https://twitter.com/MosleyJoseph

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