Measuring LUNG capacity 0.0 / 5 ? BiologyPractical applications of biologyASOCR Created by: Steff06Created on: 14-03-16 12:17 What is breathing controlled by? The diaphragm and intercostal muscles contracting and relaxing. 1 of 20 What does breathing bring in and remove? Bring in oxygen rich air into the lungs and expels carbon dioxide out of the body. 2 of 20 Define tidal volume The volume of air moved in and out of the lungs with each breath when at rest. 3 of 20 What is the normal tidal volume and what does it allow? Around 0.5dm3 and it provides the body with enough oxygen for its resting needs and removes enough CO2 to a safe level. 4 of 20 Define vital capacity The largest volume of air that can be moved into the lungs in one breath. 5 of 20 What is the vital capacity and what are factors which affect it? 5dm3. Varies between men and women, age and size alter it and regular exercise increases vital capacity. 6 of 20 What is residual volume? Volume of air that always remains in the lungs even after the biggest possible exhalation. 7 of 20 What is the normal residual volume? 1.5dm3 8 of 20 Define inspiratory reserve volume How much more air can be breathed in over and above normal tidal volume when you take a big deep breath. 9 of 20 When do you call on this reserve? When exercising. 10 of 20 What is dead space? The air in the bronchioles, trachea and bronchi. No gas exchange between this air and blood. 11 of 20 Define expiratory reserve volume How much more air can be breathed out over and above amount breathed in a tidal volume breath. 12 of 20 What is a spirometer? A chamber filled with oxygen that floats on a tank of water. 13 of 20 How does the person use the spirometer? They breathe from a disposable mouth piece attached to a tube connected to the chamber of medical-grade oxygen. 14 of 20 How can the person be asked to breathe? Asked to breathe normally at rest, take deep breaths or exercise so different patterns of breathing can be shown. 15 of 20 Describe the process of using a spirometer Breathing in takes oxygen from the chamber which makes it sink down. Breathing out pushes air into the chamber which then floats up. 16 of 20 How are movements recorded? On a datalogger so a spirometer trace can be produced. 17 of 20 What can happen if a person breathes in and out of a spirometer for a long period of time? CO2 levels will increase to a dangerous level. 18 of 20 How can this be avoided? By using soda lime to absorb the CO2 that is exhaled so the total volume of gas in the spirometer will go down. 19 of 20 What is the volume of carbon dioxide breathed out equal to? The volume of oxygen breathed in. 20 of 20
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