PPT-How the Lungs Work Alveoli

Air Sacs Resemble bunches of grapes Make up bulk of lungs Respiratory Zone Includes respiratory bronchioles alveolar ducts alveolar sacs and alveoli Only places where gas exchange occurs. Disease of The Lungs. Causes. By breathing in tiny fibers of asbestos, a heart resistant material that used to be common in insulation, vinyl floor tiles, cement, brake lining, and other products. People who have had a lot of exposure to asbestos at home, or work, can get asbestosis. It is environmental and is not contagious. . lung disease. 4.1 Structure of the human gas-exchange system. Remember these guys?. Breathing - brainpop.swf. Learning objectives. Student should understand the following:. The gross structure and function of the human gas exchange system limited to the alveoli, bronchioles, bronchi, trachea and lungs.. How do oxygen and carbon dioxide move into and out of the lungs and blood?. Starter: . Sulking! Put out your bottom lip as far as you can. Show your neighbour. How could you describe the blood vessels you can see. . and Pulmonary Ventilation. Inspiration . and Expiration. Structure. of . the. . R. espiratory. and . System. N. ose. .  . hairs. and mucus . filter. air. . A. ir . is. . warmed. Pharynx. . Put them in the correct order . Terminal bronchioles . Secondary bronchi. Alveoli, alveolar ducts and alveolar air sacs.. Right and left primary bronchi. Tertiary bronchi. Trachea. Nose . The structure of the thorax. PowerPoint. ®. Lecture Slide Presentation by . Robert J. Sullivan. , Marist College. EXCHANGE OF GASES. RESPIRATORY SYSTEM. The human respiratory system allows one to obtain oxygen, eliminate carbon dioxide. . and Disorders. Gas Exchange. Gas exchange occurs in the alveoli due to the difference in the partial pressures of oxygen and carbon dioxide in the capillary blood and the alveoli.. Since the concentration of oxygen is greater in the alveoli, it diffuses into the capillary blood.. Nose. Nose. Function: . Inhales Oxygen (. O. 2. ) . and Exhales . . . Carbon . Dioxide (. CO. 2. ). Uses nose hair (Cilia) to filter dust and germs from entering the lungs. Moistens the air. Warms air . The Conducting Zone. Nose. Only external visible part of the respiratory system. Air enters the nose by passing through the nostrils. The interior of the nose consists of the nasal cavity which is divided by the nasal septum. Lecture . – 4. Dr.Zahoor Ali Shaikh. 1. Elastic Behavior Of The Lungs. Elastic Behavior of the lungs is due to elastic connective tissue and alveolar surface tension.. During Inspiration – lungs expand.. Chronic bronchitis is a condition of increased swelling and mucus (phlegm or sputum) production in the breathing tubes ( airways ). Airway obstruction occurs in chronic bronchitis because the swell Success Criteria . Describe, with the aid of diagrams and photographs, the distribution of cartilage, ciliated epithelium, goblet cells, smooth muscle and elastic fibres in the trachea, bronchi, bronchioles and alveoli of the mammalian gaseous exchange system; . Learning objectives:. Must say what the job of the lungs is and name the main parts. Should describe the special features the lungs have to do their job really well. Could explain how the alveoli work. Functions of Respiratory System . Provides enormous Surface area for . gas exchange. . between alveoli and circulating blood.. Helps . regulate pH. of body fluids.. Permits vocal . sounds. .. External nares.