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Questions and Answers
What is a nostril?
What is a nostril?
- Opening in the ear
- An organ in the chest
- Part of the throat
- Either of two openings in the nose (correct)
What is the oral cavity often referred to as?
What is the oral cavity often referred to as?
mouth
What is the larynx also known as?
What is the larynx also known as?
voice box
What are lungs?
What are lungs?
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What are bronchi?
What are bronchi?
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What is the diaphragm?
What is the diaphragm?
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What are alveoli?
What are alveoli?
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What are bronchioles?
What are bronchioles?
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What is the trachea commonly known as?
What is the trachea commonly known as?
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What is another term for the throat?
What is another term for the throat?
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Study Notes
Respiratory System Components
- Nostrils: Openings in the nose that allow air to enter the respiratory system.
- Mouth: Serves as an alternative pathway for air, known as the oral cavity.
Key Structures
- Larynx: Commonly referred to as the voice box, plays a crucial role in sound production.
- Lungs: Pair of saclike organs in the chest responsible for gas exchange (oxygen and carbon dioxide).
- Bronchi: Two main branches at the lower end of the trachea, directing air into each lung.
Airway Pathway
- Trachea: Also known as the windpipe, it serves as the main airway connecting the larynx to the bronchi.
- Bronchioles: The smallest branches of the bronchi, further distributing air throughout the lungs.
Respiratory Functions
- Diaphragm: A large, flat muscle at the base of the chest cavity that is essential for inhalation and exhalation.
- Alveoli: Microscopic air sacs with thin walls, where the exchange of oxygen and carbon dioxide occurs between air and blood.
Additional Structure
- Pharynx: The throat area that serves as a passageway for both air and food, connecting the nasal cavity to the larynx.
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