医学专业英语unit 6 digestive.ppt

The Digestive System Learn from text A: 1 medical terms 2 understanding the text 3 introducing the system in English Introduction 1 What are the two main functions of the digestive system? 2 What are the main structures of the digestive system? And what are the accessory structures? Translation 被物理和化学地降解 消化道 新陈代谢 唾液腺 胰腺 accessory structures be broken down both physically and chemically digestive tract /alimentary tract metabolism the salivary glands the pancreas 辅助结构 The Mouth 1 What functions does the mouth perform in the process of digestion? 2 How is deglutition carried out? 3 How is the food mass carried along the esophagus? reduce vt. vi. 【化学】还原；分解(化合物)： Water can be reduced to oxygen and hydrogen by electrolysis. Ferrous iron reduces to ferric iron. 二价铁能还原成三价铁。 vt. 【外科学】使…复位(或复原)： A doctor can reduce a fracture or dislocation. 医生能使骨折或脱臼复原。 reduction n. grind V-T If you grind a substance such as corn, you crush it between two hard surfaces or with a machine until it becomes a fine powder. 把…磨碎 Most of the wheat will be ground into flour. people who were ground by poverty 受贫穷折磨的人们 N-SING If you refer to routine tasks or activities as the grind, you mean they are boring and take up a lot of time and effort. 苦差事 [非正式] Life continues to be a terrible grind for the ordinary person. align vt. vi. 1. (使)成一直线，(使)成一行，(把…)排列成行，使排齐，对准，校直： He neatly aligned the flower-pots on the window-sill. 他整齐地把花盆一字排在窗台上。 The students aligned. 2. He aligned himself with the liberals. 他同自由主义者结盟。 to align with the left wing of the party waves of alternating muscle contraction and relaxation 肌肉一波又一波地交替收缩和松弛 the oral cavity / buccal cavity hard and soft palates ingestion mastication taste receptors saliva ptyalin a salivary amylase bolus the parotid the sublingual the submandibular deglutition the oropharyngeal canal larynx epiglottis esophagus peristalses the cardiac sphincter valve The S