ï»¿ Explain the different types of pulmonary volumes. from Biology Breathing and Exchange of Gases Class 11 Assam Board

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Explain the different types of pulmonary volumes.

Different types of pulmonary volumes.

1.Â Tidal volume : It is the air normally inspired or expired. It is approx 500 ml.

2.Â Inspired reserve volume : It is the additional volume of air inspired with maximum possible effort after normal inspiration. It is approximately 2500 ml.

3.Â Inspiratory capacity (I.C.) : It is the total amount of air a person can inspire after a normal expiration. Â It is the sum of tidal volume and inspiratory reserve volume.Â

4.Â Expired reserve volume (ERV) : It is the amount of air expired with maximum possible effort after normal expiration. It is 1100 ml.

5.Â Vital capacity : It is the maximumvolume of air a person can breathe in after forced expiration or the maximum amount of air a person can breathe out after forced inspiration. It is the sum total of tidal volume, inspired reserve volume and expired reserve volume.

6.Â Residual volume (RV): It is the amount of Â air left in the lungs after forcible expiration. It is 1100â€“1200 ml.

7.Â Functional residual volume : It is the amount of air left in lungs after normal expiration. FRV = ERV +RV.

8.Â Total lung capacity : It is the amount of air in lungs and respiratory tract after maximum inhalation effort. It is equal to the sum of vital capacity and the residual volume.

Total lung capacity = Vital capacity + Residual volume

9.Â Dead space : It is the space which contains a part of inspired air during inspiration and a part of expired air during expiration.Â

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Thoracic cavity.
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Oxygen is carried by haemoglobin as?

Oxyhaemoglobin.
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By what amount the solubility of carbondioxide is more than the solubility of oxygen?

20 - 25 times
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What is the partial pressure of oxygen in Â oxygenated blood ?

95 mm Hg
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70% of carbondioxide is transported as ?

Bicarbonate
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