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Myostatin and Muscle Growth (1:31)
Watch this video about myostatin and muscle growth on HowStuffWorks. A gene called myostatin is directly linked to the inhibiting of muscle growth. Learn why some people who lack copies of the myostatin gene have enormous muscles in this video from... More »
Spinal Cord Injuries (1:28)
Watch this video about spinal chord injuries on HowStuffWorks. Neuroscientists are trying to enhance motor control functions by patching parts of the spine that prevent information from traveling. Learn about overcoming spinal chord injuries in this... More »
Organ Systems: Skeletal and Muscular Systems (0:24)
The skeletal and muscular systems give the body support and strength and allow it to move. They are also responsible for protecting many internal organs.
