explain the steps in respiration
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Respiration takes part from our nose through the breathing canal to the lungs and carbon dioxide comes out in the same manner
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★ LUNGS:-
→ Situate in thoracic chamber and rest on diaphragm.
→ Right lung has 3 lobes and left lung has 2 lobes. Lungs are covered by double-layered pleura.
→ The pleural fluid present in between these 2 layers lubricates the surface of the lungs and prevents friction between the membranes.
→ Lungs = Bronchi + bronchioles + alveoli.
→ Alveoli and their ducts form the respiratory or exchange part of the respiratory system.
→ Alveoli are the structural and functional units of lungs.
★ STEPS OF RESPIRATION:-
→ Pulmonary ventilation.
→ Gas exchange between alveoli and blood.
→ Gas transport (O2 transport and CO, transport).
→ Gas exchange between blood and tissues.
→ Cellular or tissue respiration.
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