travis pt 3

The periosteum is a tough tissue that covers bones and helps muscles attach. It allows bones to move with muscles during activities like running. Shin splints can occur when the periosteum is pulled away from the bone. The nervous, muscular, and skeletal systems work together to generate heat and maintain movement. Shivering is one example of the muscles increasing activity to produce heat. These systems help maintain homeostasis. Next, Colin will discuss the cardio and respiratory systems. Once again, a huge thank you from our sponsor, Epilepsy, and now let's get back into the skeletal system. The periosteum is a tough, fibrous connective tissue that covers the surface of our bones. This is also where tendons and ligaments will attach. The periosteum, which is attached to the bone, will pull on the tendon, and the tendon that attaches the muscles to our bones. In the sarcomere shorines, the muscle contracts, pulling on the tendon, which pulls on the periosteum, which pulls on the bone, allowing it to move with the muscle as we run. Fun fact, shin splints make up 15% of running-related injuries and happen when the periosteum is being pulled away from the bone. The nervous system makes our muscles contract, which in turn makes our bones move. The nervous system, muscular system, and skeletal system work together to maintain movement while running in an everyday life, helping generate heat. Almost 85% of the heat a person generates in their body comes from contracting muscles. When body heat falls below optimal levels, the skeletal muscles increase their activity to make heat. Shivering is one example of this mechanism. The ability of these two systems to help us generate heat contributes to maintaining homeostasis. Now I'm going to hand the mic over to Colin to talk about cardio and respiratory system.