NURS 6501: MIDTERM EXAM:
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Which of the following correctly pairs a gross anatomical structure from the bronchial tree with its corresponding normal microscopic tissue type?
Group of answer choices
- Alveoli: Simple squamous epithelium
- Main bronchi: Specialized cartilage lining the lumen
- Trachea: Non-ciliated columnar epithelium
- Bronchioles: Stratified squamous epithelium
- Alveoli: Simple squamous epithelium: The alveoli, which are the tiny air sacs in the lungs where gas exchange occurs, are lined with simple squamous epithelium. This thin, flat layer of cells allows for efficient gas exchange between the air and blood.
- Main bronchi: Specialized cartilage lining the lumen: The main bronchi are lined with pseudostratified columnar epithelium, not specialized cartilage. The cartilage is present but in the form of C-shaped rings to provide structural support, not as a lining.
- Trachea: Non-ciliated columnar epithelium: The trachea is actually lined by ciliated pseudostratified columnar epithelium, not non-ciliated. The cilia help move mucus and trapped particles out of the respiratory tract.
- Bronchioles: Stratified squamous epithelium: The bronchioles are lined with simple cuboidal epithelium, not stratified squamous epithelium. Stratified squamous epithelium is typically found in areas subject to more mechanical stress, like the skin or the oral cavity.