HUMAN NUTRITION

Detailed explanation-1: -The nose, trachea, lung and alveoli are all organs of the respiratory system that function in respiration.

Detailed explanation-2: -The larynx and lungs are parts of the human respiratory system. Diaphragm helps in expansion of thoracic cavity during breathing. However, the heart does not have any role in breathing.

Detailed explanation-3: -The respiratory system is the network of organs and tissues that help you breathe. It includes your airways, lungs and blood vessels.

Detailed explanation-4: -The main organ of the respiratory system is the lungs. Other respiratory organs include the nose, the trachea and the breathing muscles (the diaphragm and the intercostal muscles).