PPT-Ventilation - moves air from the atmosphere to and from alveoli in the lungs.

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. Essentials of Exercise Physiology. Respiration. External respiration:. . ventilation and exchange of gasses in the lungs (pulmonary function).. Internal respiration. : . ventilation and exchange of gasses in the tissues (pulmonary function).. 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.. 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. . The . respiratory. system is the group of organs that . takes. in oxygen and gets . rid. of carbon dioxide. Respiration. is another name for . breathing. Respiration is the . transport. of oxygen from . AND WHAT THEY SOUND LIKE!. INSPIRATION:. During inhalation (Inspiration), the chest expands up and outward. The diaphragm contracts and moves downward. The thoracic cavity expands. Air moves from outside (high pressure) to inside the body (low pressure). exchange by diffusion between air in the . lungs and blood in capillaries.. What can you tell me about alveoli?. Alveoli. The tiny air sacs at the end of each bronchiole are specially designed for gas exchange. . organs are involved in the Respiratory system (breathing). Mouth. Trachea. Bronchus. Alveoli. Diaphragm. Rib cage. Lungs. Bronchioles. Oesophagus. Heart. Nose. Stomach. Ciliated epithelial cells. Larynx. E4.p2X-A,F, I. Characteristics of the Atmosphere. Composition of the Atmosphere. Atmosphere. -mixture of gases around the Earth. 78% Nitrogen-(released from decay/eruptions). 21% Oxygen. 1% Other- (Carbon Dioxide, Argon). 4 distinct events. Pulmonary ventilation. : air is moved in and out of the lungs. External respiration. : gas exchange between blood and alveoli. Respiratory gas transport. : CV system transports oxygen and carbon dioxide between lungs & tissues (discussed in Blood chapter). What is gas exchange?. The process all organisms undergo in which they absorb one gas from the environment and release a different one. . In human gas exchange… . -absorb oxygen for cell respiration and release carbon dioxide as waste. the . mediastinum. . site . of vascular and bronchial attachments. . anterior. , lateral, and posterior surfaces . Lungs. Apex: . . Base: . inferior . surface that rests on . _. . on . mediastinal. INTRATRACI IErZL IULPI lONAlir VENTILATION 607 Fig I The lobes of the lung of the sheep in percent total lung 100 11 2 I priate We took particular care to avoid damage to the remaining lung During c 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; .