Survey
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Describe main function of parts of the respiratory system (Grade E) Define key terms (Grade C) Explain how alveoli are adapted to efficient gas exchange (Grade A) Describe causes of lung diseases (Grade C), including asthma (Grade A) How is the respiratory system adapted to allow the passage of air. Carbon dioxide moves from the blood into the lungs, by diffusion. Oxygen moves from the lungs into the blood, by diffusion. Lung dissection Permeable Moist surface Large surface area Good blood supply Thin lining (one cell thick) B5d1 part 1 worksheet A. B. C. A) Trachea, B) Lung, C) Intercostal muscle, D) Rib, E) Diaphragm, F) Pleural membrane, G) Bronchus, H) Bronchiole, I) Air sac Bronchus Bronchiole Air sac/Alveoli Bronchiole Bronchus Trachea Breathing Taking air in and out of your lungs Respiration Breaking down sugar to make energy Inspiration Breathing in Expiration (inhalation) (exhalation) Breathing out Tidal volume = volume of air exchanged during normal quiet breathing Vital capacity = maximum volume of air which can be exchanged from full inspiration to full expiration Residual volume = amount of air left in the lungs when you breathe out fully Lung diseases Explain how alveoli are adapted to efficient gas exchange (Grade A) Describe causes of lung diseases (Grade C), including asthma (Grade A) Starter – unjumble these adaptations of alveoli empelareb sitom cufsrae glrae cufsrae eara ogod lobod ypsupl nhti iginln Permeable Moist surface Large surface area Good blood supply Thin lining Trachea and bronchi Mucus Ciliated cells Extract information on lung diseases from comprehension in pairs Need to find for each disease: Cause Symptoms Industrial E.g. Asbestosis Inflammation & scarring limiting gas exchange Genetic Cause E.g. Cystic Fibrosis Too much mucus in the bronchioles Life Cause style Cause E.g. Lung Cancer Cells grow rapidly reducing surface area in lungs Disease Asbestosis Cystic fibrosis Type (industrial, lifestyle, genetic) Industrial Genetic Lifestyle Lung cancer Cause Symptoms Treatment Asbestos fibres Coughing, breathlessness, chest pains and blueness of lips and ear lobes because of lack of oxygen No cure Lung Transplant Coughing, wheezing and breathlessness Chest infections Digestion problems and weight loss Daily physiotherapy Inhaler Gene therapy No cure Lung Transplant Coughing (coughing blood in later stages), chest pain, breathlessness and weight loss Surgery, radiation and chemotherapy No cure Lung Transplant Genes chromosome 7 smoking, exposure to asbestos or radiation and a poor diet Describe what happens during an asthma attack Sensitive airways Muscles around bronchioles contract so airways are restricted Trigger More mucus produced Body releases histamines Mucus plug Airways inflamed Less air available for gas exchange in the airways Symptoms Difficulty breathing Wheezing Tight chest Treatment Inhaler How does an inhaled help an asthma sufferer? Inhaler contains a muscle relaxant drug which allows the airways (bronchioles) to open. Describe main function of parts of the respiratory system (Grade E) Define key terms (Grade C) Explain how alveoli are adapted to efficient gas exchange (Grade A) Describe causes of lung diseases (Grade C), including asthma (Grade A) Assess grade criteria for first half of the module, identify areas for improvement and areas of strength Check Show My Homework for B5 Homework - 4