BIOS 1030 Lecture Notes - Lecture 15: Spirometer, Tuberculosis, Thoracic Cavity
Document Summary
Chapter 10 respiratory system: exchange of gases. Respiration processes: breathing (ventilation): moving air in and out of the lungs, external respiration: gas exchange between air and blood. Internal respiration: gas exchange between blood and tissues: cellular respiration: oxygen use to produce atp, carbon dioxide as waste. Respiratory system consists of upper and lower respiratory tract: upper respiratory. Filters larger foreign material from incoming air. Larynx: maintains on open airway, routes food and air appropriately, assists in sound production. Trachea: transports air to and from lungs. Lungs: transport air to alveoli for gas exchange. Defenses of the respiratory tract: mucus: entraps microorganism, cilia: push microorganisms and mucus up and out of respiratory tract. Smokers cough: cough reflex: involuntary expulsion of air from the lungs to remove irritant or blockage. The lungs are organs of gas exchange: located within thoracic cavity, surrounded by pleural membranes, bronchioles terminate in clusters of alveoli, alveoli.