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Did you know?
The familiar sounds of your heart are made by the heart's valves as they open and close.
Did you know?
The eye muscles are the most active muscles in the whole body. The external muscles that move the eyes are the strongest muscles in the human body for the job they have to do. They are 100 times more powerful than they need to be.
Did you know?
If all the neurons in the human body were lined up, they would stretch more than 600 miles.
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There are more sensory neurons in the tongue than in any other part of the body.
Did you know?
Thyroid conditions cause a higher risk of fibromyalgia and chronic fatigue syndrome.
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