
Diagram of the Human Muscular System (Infographic)
Learn about the muscles that move your body and keep you alive.
Inside your body there’s a bustling highway with your beating heart at the center. Learn all about your body’s 60,000 miles of microscopic blood vessels, 5 to 6 quarts of blood, and the sundry passengers (lymph, blood cells, nutrients and more) that ride it every day.
Related Topics: Respiratory System, Immune System, Lymphatic System, Nervous System