- 1、本文档共69页,可阅读全部内容。
- 2、有哪些信誉好的足球投注网站(book118)网站文档一经付费(服务费),不意味着购买了该文档的版权,仅供个人/单位学习、研究之用,不得用于商业用途,未经授权,严禁复制、发行、汇编、翻译或者网络传播等,侵权必究。
- 3、本站所有内容均由合作方或网友上传,本站不对文档的完整性、权威性及其观点立场正确性做任何保证或承诺!文档内容仅供研究参考,付费前请自行鉴别。如您付费,意味着您自己接受本站规则且自行承担风险,本站不退款、不进行额外附加服务;查看《如何避免下载的几个坑》。如果您已付费下载过本站文档,您可以点击 这里二次下载。
- 4、如文档侵犯商业秘密、侵犯著作权、侵犯人身权等,请点击“版权申诉”(推荐),也可以打举报电话:400-050-0827(电话支持时间:9:00-18:30)。
查看更多
[理学]chapter 4 Respiratory Physiology
Content Introduction 概述 Principles of pulmonary ventilation肺通气原理 Gas exchange and transport 气体交换与运输 The regulation of respiration 呼吸运动的调节 Energy production from nutrients by oxidative phosphorylation requires O2 and removal of tissue waste-CO2 - Respiratory system 动物在进行新陈代谢的过程中,需要不断地从外界摄取氧气,氧化营养物质获取能量。同时又必须把在代谢过程中产生的二氧化碳排出体外。 1. Organization of the respiratory system Functional classifications Conducting portion传导部分: transports air (warms, humidifies, filters and cleans inspired air) Nose鼻 Nasal cavity鼻腔 Pharynx咽:Common pathway for both air and food Larynx喉: Prevents swallowed materials from entering the lower respiratory tract. Conducts air into the lower respiratory tract Produces sounds Trachea气管: Walls are reinforced by 15 to 20 C-shaped tracheal cartilages气管软骨. progressively smaller airways, from the primary bronchi主支气管 to the bronchioles 细支气管 Respiratory portion呼吸部分: carries out gas exchange. Respiratory bronchioles呼吸性细支气管 Alveolar ducts肺泡管 Air sacs called alveoli肺泡 Organization of the Respiratory System Structural classifications Upper respiratory tract上呼吸道:is all conducting portion Lower respiratory tract下呼吸道:has both conducting and respiratory portions A pair of elastic tissue composed of the respiratory bronchioles呼吸性细支气管, alveolar ducts肺泡管, alveolar sacs肺泡囊 and alveoli肺泡 Occupy most of the thoracic cavity胸腔 Lungs Ventilation通气 occurs as a result of pressure differences induced by changes in lung volume. Properties of the lung 肺的生理特性 : Compliance顺应性:Distensibility (stretchability)扩张性(拉伸): 100 x more distensible than a balloon. Elasticity 弹性: Tendency to return to initial size after distension (resist distension). High content of elastin proteins. Elastic tension increases during inspiration吸气 and is reduced during expiration呼气. Surface tension表面张力 Organization of the respiratory system--- Bronchial Tree支气管树 Originate from the left and right primary bronchi. Primary bronchi主支气管 Secondary bronchi (or lobar bronchi)二级支气管(或肺叶支气管) Tertiary b
文档评论(0)