In this article we will discuss about the structure of respiratory tract of humans with the help of suitable diagram. Also learn about its functions. i. Upper respiratory tract extends from the upper nares to the vocal cord. (Fig. 8.1) ii. Lower respiratory tract extends from the vocal cord to the alveoli. Trachea: The trachea (windpipe) is a cartilaginous and [...]
In this article we will discuss about the subdivisions of lungs and capacities obtained by a spirometer with the help of suitable diagrams. 1. Lung Volumes: (i) Tidal Volume (TV = 500 ml): The TV (or Resting Tidal Volume, RTV) is the volume of air breathed in and out during quiet respiration (about 500 ml). (ii) Respiratory Minute Volume (RMV): [...]
In this article we will discuss about:- 1. Definition of Respiratory Dead Space 2. Types of Respiratory Dead Space 3. Measurement. Definition of Respiratory Dead Space: The respiratory tract is so designed that during inspiration its upper part upto the level of terminal bronchiole is filled with atmospheric air. The first part of the expired air, therefore, is also atmospheric [...]