Within the system of the same star, the period of a planet's orbit is proportional to the 3/2 power of its distance from the central body. (Kepler's empirical third law of planetary motion, promoted to being etched in stone by Newton's gravitation.)
You can find muscle fibers, nerves, connective tissue, and blood vessels in every skeletal system. I am hoping that this answer has satisfied your query and it will be able to help you in your endeavor, and if you would like, feel free to ask another question.
