Answer:
Explanation:
Three features of the respiratory system are the lungs, the diaphragm, and the trachea.
The lungs are the main organs of the respiratory system responsible for exchanging oxygen and carbon dioxide with the blood. They are made up of tiny air sacs called alveoli where this gas exchange takes place.
The diaphragm is a dome-shaped muscle located below the lungs that helps with breathing. When it contracts, it flattens, allowing the lungs to expand and draw in air. When it relaxes, the lungs deflate, pushing air out.
The trachea, also known as the windpipe, is a tube that connects the throat to the lungs. It carries air to and from the lungs, branching into smaller tubes called bronchi, which further divide into bronchioles, ultimately reaching the alveoli where gas exchange occurs. These three features work together to facilitate the process of breathing and ensure the body receives the oxygen it needs while removing waste carbon dioxide.
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