This animation explains the meniscus of the knee, why it is important for knee function and what symptoms occur when it is diseased.
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How Muscles Work
As the title implies, this video describes how muscles work. It shows the anatomy of the muscle in relation to bone but also the structure of muscle at the microscopic level.
Science Animation 20 - Skeletal Muscles
This animation shows the function of the main skeletal muscles in the body. At the microscopic level, artists have animated how actin and myosin, (two muscle proteins) interact to make muscles contract.