One of the two branches formed by the division of the trachea is:
Bronchiole
Hilum
Bronchus
Conchae
The Correct Answer is C
A. Bronchioles are smaller branches of the bronchial tree that come after the bronchi. They are not formed directly from the trachea.
B. The hilum is a region on the lung’s surface where structures like bronchi, blood vessels, and nerves enter or exit—but it is not a branch of the trachea.
C. The bronchus (plural: bronchi) is one of the two primary branches that the trachea divides into—right and left primary bronchi—which lead into each lung.
D. The conchae (or turbinates) are bony structures inside the nasal cavity that help filter and humidify air, but they are not related to the branching of the trachea.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
A. The cerebral cortex is involved in higher brain functions like thinking and voluntary control of breathing but does not contain central chemoreceptors.
B. Central chemoreceptors are located in the medulla oblongata, a part of the brain stem. They detect changes in the pH of cerebrospinal fluid, which reflects CO₂ levels in the blood, and help regulate breathing accordingly.
C. The aorta contains peripheral chemoreceptors, not central ones. These aortic bodies monitor blood oxygen, carbon dioxide, and pH, but they are outside the central nervous system.
D. The cerebellum coordinates motor control and balance and does not play a role in chemoreception.
Correct Answer is D
Explanation
A. Effusion refers to the accumulation of fluid in the pleural space, not a substance that reduces surface tension in the alveoli.
B. Bicarbonate is an important component in the buffering system of the blood, but it does not reduce surface tension in the lungs.
C. Exudate is fluid that leaks out of blood vessels due to inflammation or injury, often seen in conditions like pneumonia or pleuritis, but it does not affect surface tension in the alveoli.
D. Surfactant is a lipid-protein mixture produced by type II alveolar cells in the lungs. It reduces surface tension in the alveoli, preventing the lungs from collapsing and making it easier to breathe.
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