Crossword Puzzle Explore the Respiratory SystemOnline version Test your knowledge of the anatomy and functions related to breathing and gas exchange. by Lucas Rodrigues 1 Tiny air sacs in the lungs where gas exchange occurs. 2 The main passageways that branch from the trachea into the lungs. 3 A dome-shaped muscle that plays a crucial role in breathing. 4 The windpipe that connects the throat to the lungs. 5 A vital gas that is essential for cellular respiration. 6 The process of moving air in and out of the lungs. 7 Small blood vessels where oxygen and carbon dioxide exchange occurs. 8 The primary organs of the respiratory system responsible for gas exchange. 7 2 1 6 8 3 4 5
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