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The human respiratory system consists of the nose (nasal cavity), pharynx, larynx, trachea, right and left bronchi, bronchioles, alveoli, lungs, diaphragm, and intercostal muscles. The following simple diagram illustrates the organs involved in respiration: ``` Nose / Nasal Cavity │ Pharynx │ Larynx │ Trachea │ ┌──────────┴──────────┐ │ │ Right Bronch Left Bronch │ │ Bronchioles Bronchioles │ │ Alveoli (Air Sacs) Alveoli (Air Sacs) │ │ Right Lung Left Lung \ / \ / Diaphragm ``` Respiration is the physiological process by which oxygen is taken into the body and carbon dioxide is eliminated. It includes pulmonary ventilation, external respiration, transport of respiratory gases, internal respiration, and cellular respiration. The respiratory organs work together to ensure continuous gas exchange necessary for energy ______ _____ ___ _________ _________ ___ ___ ___ ______.
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