当前课程知识点:Gateway to Medicine: An Introduction to the Field of Medicine > CH01 Smog and Lung Diseases > 01-The basic condition of the air > The basic condition of the air
返回《Gateway to Medicine: An Introduction to the Field of Medicine》慕课在线视频课程列表
返回《Gateway to Medicine: An Introduction to the Field of Medicine》慕课在线视频列表
当空气污染随着经济
科技发展
悄悄走进我们的生活
并成为危害人类健康的
主要杀手之时
人们开始感到恐惧
束手无措
如何客观地认识污染
如何面对空气污染带来的疾患
如何科学地预防
污染造成的人体损伤
如何有效地防止疾病的发生
是今天我们要共同探讨的话题
人体每天需要吸入
10—12立方米的空气
相当于最大型载重汽车的容量
可以想见
这些空气
要在60~80平方米的肺泡里
进行气体交换和吸收
来维持我们的生命活动
所以
“正常”空气是保证人体生理机能
和健康的必要条件
那么
大气虽然有一定的自我净化能力
但是因为自然过程等因素
进入大气的污染物时常过多
超过了它自我净化的能力
就会造成污染
我们把距地面12公里以内的
空气层称为对流层
污染后的空气
可以在对流层中上层
发现相当数量的微生物
主要是细菌
对流层的空气
对人类及生物生存及健康
起到非常重要的作用
那洁净的空气的成分
又是怎样的呢
它是由78.1%的氮气
20.9%的氧气 0.93%的氩气
以及少量的二氧化碳
和水等气体组成
可以说自然状态下
这些混合气体在空气中
占有的百分比是基本恒定的
从人每天的平均摄入量来看
每人每天大约吃入食品1.5Kg
饮水2Kg
而吸入的空气约15Kg
从我们小的时候
妈妈爸爸就教育我们
“病从口入”
大家一定知道
我们可以选择食品和饮用水
但我们却很难选择空气
因此
空气质量对人类的健康是至关重要的
-01-The basic condition of the air
--The basic condition of the air
-02-What is smog and its influence to the body
--What is smog and its influence to the body
-03-The structure and the function of human respiratory system
--The structure and the function of human respiratory system
-04-How the smog cause the human respiratory system disease
--How the smog cause the human respiratory system disease
-05-Asthma
--Asthma
-Exercise 01
-06-COPD
--COPD
-07-Lung cancer Ⅰ
-08-Lung cancer Ⅱ
-Exercise 02
-01 Dissection of genital organs
--Dissection of genital organs
-Exercise 01
-02 The formation of embryo and fetal appendage
--The formation of embryo and fetal appendage
-Exercise 02
-03 Characteristic of embryonic and fetal development
--Characteristic of embryonic and fetal development
-04 Maternal changes during pregnancy
--Maternal changes during pregnancy
-05 Four factors that affect childbirth
--Four factors that affect childbirth
-06 Mechanism of labor
-01 The energy requirement and the metabolic characteristics of kids
--The energy requirement and the metabolic characteristics of kids
-02 Need of the nutrition and metabolism of kids Ⅰ
--Need of the nutrition and metabolism of kids Ⅰ
-Exercise 01
-03 Need of the nutrition and metabolism of kids Ⅱ
--Need of the nutrition and metabolism of kids Ⅱ
-Exercise 02
-04 Guided feeding of infant Ⅰ
-Exercise 03
-05 Guided feeding of infant Ⅱ
-06 Guided feeding of infant Ⅲ
-01 Introduction
-02 What is tumor
-03 The general shape of tumor
-04 The atypia of the tumor
-05 Name and classification of the tumor
--Name and classification of the tumor
-Exercise 01
-06 The growing type of the tumor
--The growing type of the tumor
-07 Spread of tumor
-Exercise 02
-08 The grading and staging of tumors and the effects to the body
--The grading and staging of tumors and the effects to the body
-09 The difference between benign and malignant tumors
--The difference between benign and malignant tumors
-10 The environmental causes of cancer
--The environmental causes of cancer
-11 Heredity and tumor
-01 Overview
--Overview
-02 Sudden cardiac arrest
-Exercise 01
-03 Non-professional life support
--Non-professional life support
-Exercise 02
-04 Professional life support
-Exercise 03
-05 Adult advanced life support Ⅰ
--Adult advanced life support Ⅰ
-Exercise 04
-06 Adult advanced life support Ⅱ
--Adult advanced life support Ⅱ
-Exercise 05
-07 Electric defibrillation
-01 Introduction
-02 Risk factors and pathogenesis of atherosclerosis
--Risk factors and pathogenesis of atherosclerosis
-03 Pathological changes of atherosclerosis
--Pathological changes of atherosclerosis
-Exercise 01
-04 Atherosclerosis of vital organs
--Atherosclerosis of vital organs
-05 Coronary atherosclerotic heart disease
--Coronary atherosclerotic heart disease
-Tips 03
--Tips 03
-06 Primary hypertension
-Exercise 02
-07 The etiology and pathogenesis of hypertension
--The etiology and pathogenesis of hypertension
-08 The types and pathologic changes of essential hypertension
--The types and pathologic changes of essential hypertension
-Exercise 03
-01 Overview Ⅰ
-02 Overview Ⅱ
-03 What is virus
-Exercise 01
-04 The structure and functions of influenza viruses
--The structure and functions of influenza viruses
-Exercise 02
-05 Different type of influenza viruses
--Different type of influenza viruses
-Exercise 03
-06 Bird flu
--Bird flu
-Exercise 04
-07 Street virus
-Exercie 05
-01 Introduction
-02 Chronic gastritis caused by helicobacter pylori infection
--Chronic gastritis caused by helicobacter pylori infection
-Exercise 01
-03 Helicobacter pylori causes peptic ulcer
--Helicobacter pylori causes peptic ulcer
-Exercise 02
-04 Pathological changes of peptic ulcer
--Pathological changes of peptic ulcer
-Exercise 03
-05 Gastric cancer
-01 The evolution of biological motion
--The evolution of biological motion
-02 Biomechanics of human motion
--Biomechanics of human motion
-Exercise 01
-03 The perfect unity of function and structure
--The perfect unity of function and structure
-Exercise 02
-04 A brief history of trauma orthopedic development Ⅰ
--A brief history of trauma orthopedic development Ⅰ
-05 A brief history of trauma orthopedic development Ⅱ
--A brief history of trauma orthopedic development Ⅱ
-Exercise 03
-06 Sprain and fracture of the ankle joint
--Sprain and fracture of the ankle joint
-Exercise 04
-07 Ankle sprain
-Exercise 05
-08 Prevention of ankle sprain
-Final Exam