the deltoids allow for a wide range of actions true or false please help I only have a couple minutes left

The amount of oxygen that is actually used by the body during the rest or a hand workout is determined by the heart rate, the stroke volume, and the amount of a. blood circulating in the vascular system b. oxygen removed from the vascular system c. oxygen provided to the vascular system d. blood that individual has in the body e. hemoglobin in the red blood cells

If you are having a hard time lifting something, you should arch your back. a. true b. false

When you have proper posture, your back is arched. a. true b. false