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Questions and Answers
What is the role of the trachea in the lower respiratory tract?
What is the role of the trachea in the lower respiratory tract?
- To connect the throat to the bronchi (correct)
- To secrete mucus to trap dust
- To exchange gases in the lungs
- To divide into smaller bronchioles
Which statement correctly describes the bronchi?
Which statement correctly describes the bronchi?
- It connects the nasal cavities to the throat
- It divides into two tubes (correct)
- It exchanges gases in the alveoli
- It secretes proteinaceous substances
What is the function of the olfactory glands in the nasal cavities?
What is the function of the olfactory glands in the nasal cavities?
- To provide a site for gas exchange
- To connect the throat to the bronchi
- To secrete a proteinaceous substance to keep the surface moist (correct)
- To divide the bronchi into smaller tubes
What type of epithelium lines the nasal cavities?
What type of epithelium lines the nasal cavities?
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Where do the bronchioles end in the lower respiratory tract?
Where do the bronchioles end in the lower respiratory tract?
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Study Notes
Lower Respiratory Tract
- The trachea connects the throat to the bronchi.
- The bronchi divide into two tubes.
- Bronchioles are smaller tubes that branch off from the bronchi and end in the pulmonary alveolus.
- The lung structure consists of the bronchial tree, which includes air tubes branching off from the bronchi into smaller and smaller air tubes, each ending in a pulmonary alveolus.
Nasal Cavities
- The nasal cavities are lined with a ciliated pseudostratified columnar epithelium.
- This epithelium contains the cell bodies of bipolar nerve (olfactory) cells that have proteins acting as odorant receptors.
Mucosa of the Nasal Cavities
- The mucosa of the nasal cavities has olfactory nerves.
- It also has olfactory glands that secrete a proteinaceous substance onto the epithelial surface.
- This secretion keeps the surface moist and provides a trap for aromatic substances.
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Description
This quiz covers the structure and functions of the lower respiratory tract, including the trachea, bronchi, and bronchioles, as well as the nasal cavities. It's perfect for students of biology, anatomy, and health science.
