Question

How does oxygen present in air get to all parts of the body in the case of a mammal ?​

Answer 1

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As seen in mammals, air is taken in from the external environment to the lungs.When water passes over the gills, the dissolved oxygen in the water rapidly diffuses across the gills into the bloodstream. The circulatory system can then carry the oxygenated blood to the other parts of the body.

Answer 2

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❍In mammals, air is warmed and humidified in the nasal cavity. Air then travels down the pharynx and larynx, through the trachea, and into the lungs. In the lungs, air passes through the branching bronchi, reaching the respiratory bronchioles.