Podcast
Questions and Answers
What is the main function of the respiratory system?
What is the main function of the respiratory system?
What happens to the air we inhale?
What happens to the air we inhale?
What is the purpose of the alveoli?
What is the purpose of the alveoli?
How many times does the body breathe each day?
How many times does the body breathe each day?
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What is the name of the muscle that helps us breathe?
What is the name of the muscle that helps us breathe?
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What is the byproduct of cells doing their job?
What is the byproduct of cells doing their job?
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What is the purpose of the trachea?
What is the purpose of the trachea?
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What is necessary for cells to grow and function?
What is necessary for cells to grow and function?
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What happens to the carbon dioxide in the alveoli?
What happens to the carbon dioxide in the alveoli?
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What is the main difference between inhaling and exhaling?
What is the main difference between inhaling and exhaling?
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Study Notes
What Is the Respiratory System?
- The respiratory system is the part of the body that handles breathing, allowing us to laugh, talk, sing, and live.
- It brings oxygen into the body and removes carbon dioxide, which is necessary for cells to grow, work, and function.
Parts of the Respiratory System
- Air enters the body through the nose or mouth and passes through the throat and into the windpipe (trachea).
- The trachea splits into two branches that go into each of the two lungs.
- The branches in the lungs continue to split into smaller branches, eventually ending in thin air sacs called alveoli.
Alveoli
- Alveoli are small air sacs that look like clusters of grapes and are covered with tiny blood vessels.
- Oxygen from inhaled air enters the blood vessels and travels to every part of the body.
- Carbon dioxide moves out of the blood and into the air sacs to be exhaled.
How Breathing Works
- The body takes care of breathing automatically, even when sleeping or unconscious.
- The diaphragm, a large flat muscle between the chest and belly, tightens and moves down to pull oxygen-filled air into the lungs when inhaling.
- The diaphragm relaxes and moves up to push carbon dioxide-filled air out of the lungs when exhaling.
- The diaphragm helps facilitate breathing approximately 20,000 times per day.
Voice Production
- The voice box, located at the top of the trachea, contains vocal cords.
- When air from the lungs moves over the vocal cords, they vibrate, producing sound.
- The air exhaled from the lungs helps make the sounds heard when talking, singing, and laughing.
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Description
Learn about the respiratory system, its functions, and its parts. Discover how it brings oxygen into the body and removes carbon dioxide.
