What is one of the functions of the visceral pleurae?

• A. House passageways bigger than primary bronchi
• B. Cover and protect the lungs
• C. Regulate airflow
• D. Support the diaphragm

Answer: (B)

The visceral pleurae serve a critical role in the respiratory system by covering and protecting the lungs. This double-layered membrane adheres closely to the lung surface, ensuring that the lungs are safeguarded against physical trauma and infections. The pleurae also create a fluid-filled pleural cavity, which facilitates smooth movement of the lungs during the expansion and contraction that occurs with breathing. This protective covering is essential for maintaining lung integrity and function, allowing for efficient gas exchange within the respiratory system.