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Lung Volumes and Capacities Lung is the primary respiratory organ of animals.

Lung Volumes and Capacities Lung is the primary respiratory organ of animals. However, the structure and capacities are different amongst various species.  For example, the structure of a dog’s lungs is smaller than humans. Also, the lungs of a sparrow are different as they can fly.   Lung volumes and capacities are two significant terms in the respiratory system. It is determined based on Human breath, which is a full respiratory circle of one inspiration and expiration.  Lung Volume Lung volume is also called respiratory volume. An instrument called Spirometer helps in measuring Respiratory volumes.  The lung volume definition tells that it calculates how much air moves in and out of the lungs. It also helps in examining the physical condition of the lungs and overall pulmonary system.  The main components of lung volume are following.

However, a sum of all these volumes helps in deriving lung capacities which is useful in finding out pulmonary disorder. Lung Capacity Human lung capacity is calculated by adding two or more lung volumes.

Besides, total lung capacity in ml is near about 6000 ml. Now it’s your turn to write a note on the functions of lungs in exchanging gases through alveoli. Lung Volumes and Capacities Normal Value  The following table will show lung volumes and capacities values. Respiratory Volumes and Capacity Measurement Primarily, the following methods are most popular in calculating these two factors.

Ans. b) Lung Volume vs Lung Capacity There is a stark difference between these two terms. The first one shows the quantity of air for a single function. For example, breathing in or out. The last one tells the maximum amount of air lungs can hold. For instance, it is the sum of two or more lung volumes.    

Vital capacity is the maximum amount of air that expels from the lungs after a long inhalation.

On average, an adult male can hold 6 litres of air in the lungs. It is called Total Lung Capacity. How to calculate lung capacity? The sum of inspiratory reserve volume, tidal volume, expiratory reserve volume and residual volume denotes lung capacity. The result varies with age and body weight.

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