For gases to diffuse well, a large locate area is required, especially in water; a gas needs to travel a pithyly distance in position to diffuse between the caudex and the outside environment; and aquatic animals also move the water/respiratory fluid over their lungs and gills to allow for more perfusion of their respiratory organ/ system (its easier to hold back the respiratory gases). Although mammals have a large respiratory place area, we have a short pathway for diffusion! . The air enters done the oral and nasal cavities, thence to the pharynx, passes through the trachea, which divides into the bronchi which end in the right and left lungs. These bronchi besides branch into air sacs called alveoli. These alveoli suffocate cappillaries where actual gas exchange occurs through thin alveolar consonant walls and cappillaries. Oxygen binds to the protein molecule hemoglobin in blood and...If you indispensableness to get a wide-cut essay, order it on our website: OrderCustomPaper.com
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