How does the respiratory system in man work ?
Answer Posted / abdul basit
Like other life processes, the respiration also occurs in Organism for the transport of Oxygen into the blood and carbon dioxide out of the blood.Respiration is involuntary action controlled by breathing centre in the medulla. respirtory tract is also called air passage way which consists of nostrils,nasal cavities,pharynx,glottis,larynx,trachea,bronchi,bronchioles,alveolar ducts and alveoli.
the lungs are the principle organs of respiration. the lungs themselves neither draw in air nor push it out. The diaphragm, abdominal muscles and the intercostals muscles accomplish the expansion and contraction of the lungs.breathing takes place in to phases i.e:inspiration(when air enter into the lungs) and expiration(when air comes out of the lungs).
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