Which of the following is a component of the human respiratory system? 

The correct answer is Diaphragm.

Key Points

• The diaphragm is a muscle that plays a crucial role in the human respiratory system.
• It is located beneath the lungs and separates the thoracic cavity from the abdominal cavity.
• During inhalation, the diaphragm contracts and flattens, creating a vacuum that allows air to enter the lungs.
• During exhalation, the diaphragm relaxes and moves upwards, helping to expel air from the lungs.
• The diaphragm is essential for efficient breathing and respiratory function.

Additional Information

• Alveoli
  • Alveoli are tiny air sacs in the lungs where gas exchange occurs.
  • They are surrounded by capillaries, allowing for the exchange of oxygen and carbon dioxide between the lungs and the bloodstream.
• Bronchi
  • The bronchi are the main passageways that direct air into the lungs.
  • They branch off from the trachea and further divide into smaller bronchioles within the lungs.
• Trachea
  • The trachea, or windpipe, is a tube that connects the larynx to the bronchi.
  • It allows air to pass from the throat to the lungs.
• Lungs
  • The lungs are the primary organs of the respiratory system, responsible for inhaling oxygen and exhaling carbon dioxide.
  • They contain millions of alveoli where the gas exchange process occurs.