Quick Answer. Swedish chemist and philanthropist Alfred Bernhard Nobel invented dynamite. Nobel mixed nitroglycerine and kieslguhr (diatomaceous earth) in a series of experiments in the 1860s to create the explosive, according to History Today. Nobelâs work in the arms industry led him to establish the Nobel prize.
Your bones and muscles work together through a series of impulses and signals communicated between the brain and skeletal muscles. In order to move, the nervous system signals a skeletal muscle to contract. When the muscle contracts, this movement causes the attached bone (or bones) to follow.
This process is known as the sliding filament model of muscle contraction because the actin filaments slide over the myosin filaments. The muscular system works with the nervous system to produce the contraction. Neurons (nerve cells) form connections to one or more muscle cells. A chemical, acetylcholine, is released when an impulse is sent which allows the myosin-actin bridge to form.