The Respiratory System 0.0 / 5 ? Physical EducationAnatomy & physiologyA2/A-levelAQA Created by: Grace Bowman WHSCreated on: 02-07-19 09:24 The Respiratory System Anatomy and Physiology 1 of 10 What is the function of the respiratory system? Pulmonary ventilation (the inspiration and expiration of air) and gaseous exchange. 2 of 10 What is external respiration? The movement of oxygen into the bloodstream and carbon dioxide into the lungs. 3 of 10 What is internal respiration? The release of oxygen to respiring cells for energy production and collection of waste products. 4 of 10 What does the blood consist of? 45% cells, 55% plasma. 5 of 10 How is oxygen transported? Carried within haemoglobin in the red blood cells (97%) or carried within blood plasma (3%) 6 of 10 How is carbon dioxide transported? Dissolved in water and carried as carbonic acid (70%), carried within haemoglobin (carbaminohaemoglobin) (23%) or dissolved in blood plasm (7%) 7 of 10 What is breathing rate? The number of inspirations or expirations per minute (average 12-15 breaths a minute) 8 of 10 What is tidal volume? The volume of air inspired or expired per breaht (approximately 500ml) 9 of 10 What is minute ventilation? The volume of air inspired or expired per minute (approximately 7.5l/min) 10 of 10
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