As a muscle I am responsible for regulating leaving teh body

Cellular respiration is the process in which your muscles use oxygen to produce ATP energy. Whether you're exercising or not, the oxygen in your body is used to break down glucose and create the fuel for your muscles called ATP. During exercise, your muscles have to work harder, which increases their demand for oxygen

The digestive system is in charge of squeezing energy and nutrients out of all that ... Anus: The place where solid waste exits the body.