HN220 Lecture Notes - Lecture 19: Alveolar Cells, Intrapleural Pressure, Pulmonary Pleurae
Document Summary
Internal respiration: use of oxygen within mitochondria to generate atp by oxidative phosphorylation and the production of carbon dioxide as a waste product. External respiration: exchange of oxygen and carbon dioxide between the atmosphere and body tissues. Pulmonary ventilation, movement of air into the lungs and out of the lung. Exchange of oxygen and carbon dioxide between the lung and blood by diffusion. Transportation of oxygen and carbon dioxide between the lungs and body tissues by the blood. Exchange of oxygen and carbon dioxide between the blood and tissues by diffusion. Regulates acid base balance in the blood. Defense mechanism against pathogens and foreign particles in the airways. Lung divided into lobes: right has 3 and the left has 2. Air gets into and out of the lungs through upper airways and tubes from a respiratory tract. Air passages in the head and neck. Air enters nasal/oral cavity which leads to pharynx.
