基礎醫(yī)學英語教學課件：TheRespiratorySystem

1、The Respiratory System Class 19 Speaker: 張藝謀 Makers: 鞏俐 章子怡 李曼 董潔 倪妮 周 冬雨 The Respiratory System Composition nRespiratory tract qNose qPharynx qLarynx qTrachea qBronchi nLungs:paired organs of respiration Function of respiratory system n supply the body with oxygen and to get rid of excess carbon di

2、oxide resulting from cell metabolism Nasal passages nThe nasal passages is the beginning of the respiratory system Play two critical roles: They filter the air to remove potentially disease-causing particles;and they moisten and warm the air to protect the structures in the respiratory system. The P

3、harynx nA short,funnel-shaped tube about 13 cm long. Division nasopharynx oropharynx laryngopharynx The Larynx nPosition situated in the anterior part of the neck(below the hyoid bone),and extends from vertebral level of C3 to C6 nThe framework of the larynx is made up of cartilages,which connected

4、by membrances and ligaments and moved by muscles.It is lines by mucous membrane Laynageal cartilages -thyroid cartilage -cricoid cartilage Laryngeal cartilages -epiglottic cartilage -arytenoid cartilage The Trachea Position nExtents from the lower border of cricoid cartilage to the level of sternal

5、angle(between T4-T5 vertebrae)where it divids into right and left principal bronchi Bronchi Bronchi Right principal bronchus shorter,wider,and more vertical than the left Left principal bronchus narrow,longer,and more horizontal than the right The lungs The lungs interact with the circulatory system to deliver oxygen and remove c