what is Mechanism of breathing?
And
What are the Respiratory Volumes and capacities.
Answers
Answer:
Breathing is the physical process of inhaling oxygen and exhaling carbon dioxide. The mechanism of breathing involves two main processes: inspiration and expiration. Inspiration occurs when the diaphragm and the external intercostal muscles contract. Vital Capacity (VC): It is the maximum volume of air a person can breathe out, following a forced inspiration. It is the sum of inspiratory and expiratory reserve volume and tidal volume (IRV+ERV+TV). Total Lung Capacity: It refers to the total volume of air the lungs can accommodate after a maximal inspiration.
Explanation:
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Answer:
Mechanism Of Breathing
The respiratory system goes through two stages – Inspiration and Expiration. Let’s understand what happens during these two stages. During inspiration, atmospheric air is drawn in while during expiration, air is expelled out. This movement of air in and out of the lungs is due to a pressure gradient between the atmosphere and the lungs.
Browse more Topics under Breathing And Exchange Of Gases
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If the pressure in the lungs is lower than the atmospheric pressure, then inspiration can take place. On the other hand, if the pressure in the lungs is higher than that of the atmosphere, then expiration takes place. This pressure gradient is due to the diaphragm and a special set of muscles in the respiratory system – the internal and external intercostals that are situated between the ribs.
Explanation:
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