Fill in the Blanks Body systemsOnline version Complete the sentences using your body systems flip book by Leonor AG 1 help me move . My gives my body shape and protects my organs . My spinal cord helps messages travel between my brain and the in my body . My heart is a that pumps blood through my body . The I breathe in goes down my trachea to my . My body needs from the air to live . I breathe out a gas called that my body does not need . The food I eat goes down my to my stomach . My kidneys are special that filter waste out of my blood . The waste , travels down tubes called to my bladder .