sentence2_structure: oxygen<>gets<>to all the other organs of your body$$$the heart and lungs<>work together<>to make sure<>In your body$$$the heart and lungs<>work together to make<>sure that oxygen gets to all the other organs of your body
sentence1: Explain how arterio-venous 02-difference and oxygen extraction in the heart is unique when compared to other body organs.
sentence2: In your body, the heart and lungs work together to make sure that oxygen gets to all the other organs of your body.
question: In your body, what two organs work together to make sure that oxygen gets to all the other organs of your body?