10 Questions Biology: Organ Functions (Basic) Biology for grades 5-8. Review simple organs of the human body. Based on NGSS: MS-LS1-3 This organ pumps blood throughout the entire body. lungs heart mouth kidneys This is a muscular sac that stores liquid waste. stomach lungs bladder liver What controls voluntary & involuntary processes - known as the body's "control center?" spine pancreas heart brain … and 7 more awesome questions! Check them out by clicking “Play”.