In this animation, the respiratory organs of humans, such as the lungs, trachea and pleura, are described in a detailed manner. The function of the alveoli (air sacs) is described and a great deal of other information about the respiratory system is provided.

Contents
00:00 Introduction
00:20 Composition of air
00:47 Upper respiratory system
01:05 Nasal mucosa with cilia
01:55 Swallowing food with the help of the epiglottis
02:20 Trachea and lungs
02:50 Arteries and veins of heart and lungs
03:05 Bronchial tree (bronchial system)
04:21 Gas exchange in alveoli
06:12 Diffusion of oxygen and carbon dioxide
06:37 Rib respiration and diaphragmatic respiration
10:00 Inner and outer pleura