6.1 String Muscles

       Well, after learning a bit about the muscle system today, I just wanted to get some facts straight. Joints are in our body for the purpose of movement. In a series of pivots, levers, and hinges, these allow articulating bones to move with each other.  Joints all play specific roles in movement. Lets take your elbow joint for example. Go ahead try using it, bend your arm or something. Now, you see how the elbow moves? Well the specific joint is called a hinge joint. It permits flexion and extension. Does your forearm also move left and right? No it doesn't. You can see that the form of the joint (hinge) directly ties into its function. Now if we shift over to the idea of muscles and muscle movement, you might be wondering how these bones move. The answer is muscles. These muscles are attached to the bone in certain places allowing the body (and bones) in their needed ways. Your tibia for example has certain muscles that allow for movement.  You'll notice that your tibia moves at your knee joint. Well the reason for this is that the muscle is attached to your tibia and the joint above your tibia. The point of attachment of your muscles plays a large role in the movement of your body. Also your body has designated muscles for different kinds of movement. You have a muscle for when you flex your arm and a different one when you extend it.