Range of motion is the term used to describe the degree of amplitude that a joint can achieve. It is a parameter commonly used in physical therapy semiology to functionally evaluate a limb or a particular joint. This amplitude is precisely intended to quantify the mobility of the structure to be evaluated and not to qualify, which aims only to highlight the presence of restrictions or hypermobility. Age does not change the range of motion, however, factors such as weak muscles, disease and bone structure can significantly affect it.
The respiratory system works directly with the circulatory system to provide oxygen to the body. Oxygen taken in from the respiratory system moves into blood vessels that then circulate oxygen-rich blood to tissues and cells.