For example, the respiratory and circulatory systems work together to provide the body with oxygen and to rid the body of carbon dioxide. ... Insulin travels through the bloodstream to help cells remove glucose from the blood and use it. The hormone glucagon causes the liver to add glucose to the blood.
<span /><span>If cost was not an issue, you would need to do a/an MRI to determine the most accurate information on body composition Hope it helps </span>