Question

What is vital capacity, tidal volume and residual volume?

Answer 1

Answer:

Explanation:

VITAL CAPACITY

Vital capacity is the maximum amount of air a person can expel from the lungs after a maximum inhalation. It is equal to the sum of inspiratory reserve volume, tidal volume, and expiratory reserve volume. A person's vital capacity can be measured by a wet or regular spirometer.

TIDAL VOLUME

Tidal volume (symbol VT or TV) is the lung volume representing the normal volume of air displaced between normal inhalation and exhalation when extra effort is not applied. In a healthy, young human adult, tidal volume is approximately 500 mL per inspiration or 7 mL/kg of body mass.

RESIDUAL VOLUME

Residual volume is the amount of air that remains in a person's lungs after fully exhaling. Doctors use tests to measure a person's residual air volume to help check how well the lungs are functioning.

Answer 2

Dear Student,

◆ Vital capacity -

• Maximum volume of air exhaled by lungs after forced inspiration is called vital capacity.
• Normally vital capacity is 4800 ml.

◆ Tidal volume -

• Volume of air inhaled or exhaled by lungs during quiet breathing is called tidal volume.
• Normal tidal volume is 500 ml.

◆ Residual volume -

• Volume of air remaining in the lungs after full expiration is called residual volume.
• Normal residual volume is 1200 ml.

Thanks dear. Hope this helps you...