• MRI: Magnetic Resonance Imaging - MRI is a type of diagnostic test that can create detailed images of nearly every structure and organ inside the body. See also: How do MRI's work?

The body is 60% water

By weight, the average adult human is approximately 60% water. Water in the animal body performs a number of functions:

• Gives cells their structure
• As a solvent for transportation of nutrients
• As a medium for excretion
• A means for heat control
• As a lubricant for joints
• Shock absorption