cartilage rings - C-Shaped rings that hold open the trachea., bronchi - The tubes that take air into each lung., bronchioles - Small tubes throughout the lungs., ribs - Bones that surround the lungs to protect them., diaphragm - Muscle at the base of the lungs which controls breathing., alveoli - The end of each tube in the lungs, where gas exchange takes place., trachea - The tube that takes air from the nose/mouth to the lungs., larynx - Contains vocal cords that can control sounds you can make.,

Structures of the Gas Exchange System

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