5 Questions
What is the role of the trachea in the lower respiratory tract?
To connect the throat to the bronchi
Which statement correctly describes the bronchi?
It divides into two tubes
What is the function of the olfactory glands in the nasal cavities?
To secrete a proteinaceous substance to keep the surface moist
What type of epithelium lines the nasal cavities?
Ciliated pseudostratified columnar epithelium
Where do the bronchioles end in the lower respiratory tract?
In the pulmonary alveolus
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.
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.
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