This assignment provides a comprehensive overview of the human respiratory system, covering key anatomical components, physiological processes, and related concepts. It begins by defining and explaining 16 key terms, including alveoli, bronchi, carbon dioxide, cilia, diaphragm, epiglottis, esophagus, larynx, lungs, mucous, oxygen, oxygen saturation, pulse, respiration, surfactant, and trachea. The assignment then outlines the five main functions of the respiratory system, encompassing pulmonary ventilation, external and internal respiration, phonation, and olfaction. Further, it explains the respiratory control center, detailing its location and function in regulating breathing. The assignment also describes the pathway of air through the respiratory system, from inhalation to gas exchange, and differentiates between external and internal respiration. Additional topics include peak expiratory flow rate and blood pressure, including factors that can affect blood pressure recordings. Finally, it discusses the pulse, its relevance, and factors affecting it. The assignment concludes with a list of references including books, journals and online resources.