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.
1. Whatâs a gland? Whatâs a hormone? How do glands and hormones work together? 2. How does the endocrine system work with other body systems, such as the nervous system and the circulatory system? 3. The body makes more than 20 hormones, each with a specific function. How is it that hormones know exactly which tissues and organs to communicate with? Describe this process. 4. The endocrine system not only produces hormones, but also has a self-regulating system that senses when to shut them off.