The Human Breathing System - PDST



The Human Breathing SystemSelf-AssessmentThe Human Breathing SystemRedOrangeGreen1Define Homeostasis2Say why homeostasis is necessary in living organisms.3Explain why organisms must maintain constant conditions in their cells and bodies 4Explain diffusion5Understand that the efficiency of exchange is proportional to the surface area over which diffusion can take place.Understand that large organisms have problems with diffusion6Say how these problems of size can be overcome7Increasing the surface area e.g. alveoli in the respiratory system8The body may develop systems where the material is brought to the body surface e.g. by respiratory and excretory systems9Explain why large active animals such as humans also require a circulatory system 10Draw and identify the breathing tract in humans11Give the function of the partsNasal and buccal cavities, pharynx, epiglottis, glottis, larynx, trachea, bronchi, bronchioles, alveoli12Explain the essential features of the alveoli and capillaries as surfaces over which gas exchange takes place 13Describe the mechanism of breathing -- how we inhale and exhale air14Give the role of the diaphragm, the intercostal muscles and brain (exclude CO2, levels) in breathing15Explain pressure changes in the thoracic cavity during breathing16Outline gaseous exchange in alveoli17Give the role of haemoglobin in oxygen transport18Explain source of carbon dioxide from the plasma 19Explain water vapour exhalation.20Carry out the breathing exchange experiment using limewater or bicarbonate indicator21Describe the experiment to show the effect of exercise on the breathing rate22Compare healthy lungs with lungs of unhealthy respiratory systems and note the differences23Demonstrate the effect of cigarette smoking using cotton wool, bicarbonate indicator, etc24Explain one breathing disorder, e.g. from asthma and bronchitis25Give possible causes of the disorder 26Describe prevention and treatment of the disorder ................
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