Consider the following statements each with one or two blanks.
(i) Left lung has (1)______ lobes and right lung has (2)_________ lobes.
(ii) Prawn respires with (3)________ and insects with (4)________.
(iiii) Amount of air inhaled and exhaled with maximum effort is referred to as the (5)_______ of the lungs.
Fills up the above blanks by selecting the correct option.
Answers
After forceful inspiration, the amount of air that can be breathed out by maximum forced expiration is equal to
Answer:
The lungs are the major organs of the respiratory system and are responsible for performing gas exchange. The lungs are paired and separated into lobes; The left lung consists of two lobes, whereas the right lung consists of three lobes.
Prawn respires with gills (Branchial respiration) and insects respire by tracheae (Tracheal respiration).
Volume of air breathed in or out during normal breathing is called as tidal volume. Tidal volume 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.
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.
The inspiratory reserve volume (IRV), about 3,100 ml, is the additional air that can be forcibly inhaled after the inspiration of a normal tidal volume.
The expiratory reserve volume (ERV), about 1,200 ml, is the additional air that can be forcibly exhaled after the expiration of a normal tidal volume.
Explanation: