Archive | Respiratory System

Structure of the Respiratory Tract of Humans (With Diagram) | Biology

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 [...]

By |2017-07-27T08:05:45+00:00July 27, 2017|Respiratory System|Comments Off on Structure of the Respiratory Tract of Humans (With Diagram) | Biology

Breathing Process in Human Beings (With Diagram) | Respiration | Biology

The expansion of the lungs during inspiration follows the enlargement of the thoracic cavity in all its diameters by the contraction of the respiratory muscles. These are mentioned below: 1. Diaphragm: A dome-shaped muscle separating the abdominal wall from the thoracic cavity, with vertically running fibres at the periphery and horizontally running fibres at the centre ending in the central [...]

By |2017-07-27T08:05:44+00:00July 27, 2017|Respiratory System|Comments Off on Breathing Process in Human Beings (With Diagram) | Respiration | Biology

Subdivision of Lung Volumes and Capacities in Humans | Biology

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): [...]

By |2017-07-27T08:05:44+00:00July 27, 2017|Respiratory System|Comments Off on Subdivision of Lung Volumes and Capacities in Humans | Biology
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