What do the lungs do in the respiratory system?

What do the lungs do in the respiratory system?

• A. Filter blood
• B. Bring oxygen into the body
• C. Support body movement
• D. Produce hormones

Answer: (B)

The primary function of the lungs within the respiratory system is to facilitate gas exchange, specifically bringing oxygen into the body and expelling carbon dioxide. When air is inhaled, it travels through the bronchial tubes and into the alveoli, where oxygen diffuses into the bloodstream. This process is vital for delivering oxygen to cells throughout the body, which is essential for cellular respiration and energy production. The other functions listed do not primarily involve the lungs' roles. For example, filtering blood is primarily the function of the kidneys, while support of body movement is achieved through the musculoskeletal system, and hormone production is typically associated with glands such as the thyroid or adrenal glands. Hence, the lungs' role in bringing oxygen into the body through respiration is the most accurate and fundamental aspect of their function in the respiratory system.

The primary function of the lungs within the respiratory system is to facilitate gas exchange, specifically bringing oxygen into the body and expelling carbon dioxide. When air is inhaled, it travels through the bronchial tubes and into the alveoli, where oxygen diffuses into the bloodstream. This process is vital for delivering oxygen to cells throughout the body, which is essential for cellular respiration and energy production.

The other functions listed do not primarily involve the lungs' roles. For example, filtering blood is primarily the function of the kidneys, while support of body movement is achieved through the musculoskeletal system, and hormone production is typically associated with glands such as the thyroid or adrenal glands. Hence, the lungs' role in bringing oxygen into the body through respiration is the most accurate and fundamental aspect of their function in the respiratory system.