The document discusses the respiratory system and organs involved. It defines tidal volume as the amount of air that moves in and out with each breath, noting normal values are 500ml for males and 400ml for females. Vital capacity is defined as the maximum volume of air that can be expired after maximum inspiration, with a normal adult value of 3-5 liters. A spirometer is the device used to measure respiratory volumes like tidal volume and vital capacity.
13. Determination of Tidal Volume
and Vital Capacity
• Tidal volume: amount of air moves in or out
of the lungs with each respiratory cycle.
• Male:500 ml
• Female:400 ml
• Vital capacity: max volume of air that can be
expired during maximum inspiration
• Adult : 3-5 litres
• Device used to check respiratory volume:
Spirometer PES Modern College of Pharmacy, (for
ladies) Moshi-412105
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15. Definitions and normal values
• Tidal volume
• Inspiratory reserve volume
• Expiratory reserve volume
• Vital capacity
• Total lung capacity
• Residual volume
• Minute ventilation
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ladies) Moshi-412105
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16. Pathological significance
• Impaired vital capacity found in the following
conditions:
• Pulmonary Tuberculosis
• Pneumonia
• Emphysema
• Pulmonary congestion
PES Modern College of Pharmacy, (for
ladies) Moshi-412105
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