双语医学1-呼吸系统Pulmonary_System研究报告.ppt

Gas-Exchange Airways Respiratory bronchioles (呼吸性细支气管） Alveolar ducts （肺泡管） Alveoli （肺泡） Acinus (肺腺泡） Gas-Exchange Airways 换气道 Main Lobar Segmental Subsegmental Terminal Three steps in the exchange of gases 气体交换的三步骤 ventilation (通气) 2. diffusion (扩散) 3. perfusion (灌注) ventilation (通气) diffusion (扩散) the pulmonary system perfusion (灌注) the cardiovascular system How do they function Two lungs Airways Blood vessels Chest wall (thoracic cage) Lungs lobes segments and lobules Space between lungs, heart, great vessels, and esophagus Mediastinum Structures of the Pulmonary System Lobes of Lung Left Upper Lobe Left Lower Lobe Right Upper Lobe Right Middle Lobe Right Lower Lobe A passage (for the movement of air into and out of the gas-exchange portions of the lung). The upper airway (naopharynx, oropharynx) 1. be lined with ciliated mucosa (纤毛黏膜) 2. function: warms and humidifies inspired air removes foreign particles The mouth and oropharynx are also used for ventilation Conducting airways 传导气道 Upper Airways Lower Airways Larynx (喉)----connects the upper and lower airways endolarynx 喉内部 cartilaginous structure 软骨结构 endolarynx 喉内部 the false vocal cords the true vocal cords glottis (声门) ------ the slit-shaped space (裂缝形成的空间) Conducting airways 传导气道 Larynx The Glottis and Vocal Cords The endolarynx 1.?Glottis 2.?True Cords 3.?False Cords 4.?Epiglottis 5.?Base of Tongue Larynxgeal box (喉咙结构) cartilages the epiglottis, thyroid, cricoid the arytenoid, corniculate, cuneiform ligaments Conducting airways 传导气道 The trachea 气管---- connects the larynx to the bronchi Two main airways (bronchi) The right main bronchus The left main bronc