There are three types of muscle cells. Skeletal, smooth, and cardiac. Skeletal muscles are the muscles that allow you to move, like the bicep and the hamstring. Smooth muscles are found in the digestive system, the blood vessels, and the urinary system. Cardiac muscles are found only in the heart. Skeletal muscles are thin, striated bands that are attached to create a larger muscle, which is attached by tendons to bone. They contain actin and myosin, two myofibrals, which slide back and forth to create a contraction effect. The actin is anchored to vertical bands, while the myosin hangs in between. When the brain sends a message to the muscle (it requires a message from the brain) a neurotransmitter releases a chemical into the muscle, reacting with the actin and myosin, and causes them to slide together, causing muscular contraction.
There are three types of muscle cells. Skeletal, smooth, and cardiac. Skeletal muscles are the muscles that allow you to move, like the bicep and the hamstring. Smooth muscles are found in the digestive system, the blood vessels, and the urinary system. Cardiac muscles are found only in the heart. Skeletal muscles are thin, striated bands that are attached to create a larger muscle, which is attached by tendons to bone. They contain actin and myosin, two myofibrals, which slide back and forth to create a contraction effect. The actin is anchored to vertical bands, while the myosin hangs in between. When the brain sends a message to the muscle (it requires a message from the brain) a neurotransmitter releases a chemical into the muscle, reacting with the actin and myosin, and causes them to slide together, causing muscular contraction.