eli5 How do muscles work?
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muscles are basically a huge bundle of fiber-like muscle cells. These cells are very elastic. When you use a muscle, these cells contract, pulling themselves in and shortening the fibers. this pulls on anything the ends of the muscle fibers were connected too, like other tissues or bones.
muscles, at least skeletal muscles, cannot directly push anything. rather one muscle simply relaxes while another muscle on the opposite side starts pulling if you want to move in a different direction
muscles are basically a huge bundle of fiber-like muscle cells. These cells are very elastic. When you use a muscle, these cells contract, pulling themselves in and shortening the fibers. this pulls on anything the ends of the muscle fibers were connected too, like other tissues or bones.
muscles, at least skeletal muscles, cannot directly push anything. rather one muscle simply relaxes while another muscle on the opposite side starts pulling if you want to move in a different direction
Muscles have fibers in them called myosin and actin. When an electric signal is sent to the fiber, they start to “slide” against each other using electrostatic forces. This causes the fiber to become shorter. The stronger a contraction, the more fibers are activated.
Muscles have fibers in them called myosin and actin. When an electric signal is sent to the fiber, they start to “slide” against each other using electrostatic forces. This causes the fiber to become shorter. The stronger a contraction, the more fibers are activated.
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