Which system is responsible for breathing and energy use, including nose, trachea, lungs, bronchi, and alveoli?

Which system is responsible for breathing and energy use, including nose, trachea, lungs, bronchi, and alveoli?

• A. Urinary System
• B. Adrenal Gland
• C. Respiratory System
• D. Female Reproductive System

Answer: (C)

Breathing and energy use are managed by the respiratory system. This system brings air in through the nose, moves it via the trachea and bronchi to the lungs, and delivers oxygen to the alveoli where it passes into the blood. Oxygen is then carried to cells to power cellular respiration, the process that produces energy (ATP) for the body's activities. Carbon dioxide, a waste product of that metabolism, is expelled when you exhale. The listed parts—nose, trachea, lungs, bronchi, and alveoli—are all components of the respiratory system and work together for inhalation, gas exchange, and exhalation. The other options correspond to different functions: the urinary system handles waste removal, the adrenal glands are part of the endocrine system, and the female reproductive system governs reproduction.

Breathing and energy use are managed by the respiratory system. This system brings air in through the nose, moves it via the trachea and bronchi to the lungs, and delivers oxygen to the alveoli where it passes into the blood. Oxygen is then carried to cells to power cellular respiration, the process that produces energy (ATP) for the body's activities. Carbon dioxide, a waste product of that metabolism, is expelled when you exhale. The listed parts—nose, trachea, lungs, bronchi, and alveoli—are all components of the respiratory system and work together for inhalation, gas exchange, and exhalation. The other options correspond to different functions: the urinary system handles waste removal, the adrenal glands are part of the endocrine system, and the female reproductive system governs reproduction.