NOTICING ACTIVITY A. Look at the passage. Notice how it refers to two of the fig
ID: 3448427 • Letter: N
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NOTICING ACTIVITY A. Look at the passage. Notice how it refers to two of the figures that appear with the reading lso notice that various vocabulary items from the reading appear in the figures. Finally notice that the third figure-the microscopic picture-is not mentioned in the reading but is relevant to it. POLLUTANTS AND THE RESPIRATORY SYSTEM The Respiratory System 1 The respiratory system, as illustrated in Figure oxygen with carbon dioxide, but as most environments are impure, pollutants, too, enter the body by way of the mouth and nose. The lung parenchyma (main tissue) and respiratory passages contain no fltering system, and once breathed in, pollutants of various sizes pass into different parts of the respiratory system. In general, larger particles land, by way of direct interception and impaction, along the upper airway passages, including in the nose, mouth, and pharynx, which Figure 1 shows. Asbestos fibers are an example of respirable particulates that become lodged in the upper airway 2 Smaller particles, however, travel orn into the lower airway passages and into the tracheobronchial and alveolar regions (see respiratory system diagram), with the smallest particles settling into the lower lung tissue (see Figure 2). In the lower passages, particles end up in the bronchial region by way of sedimentation as particles lose their buoyancy. Deeper in the lungs particles diffuse and latch onto lung walls in a random motion similar to that of gas molecules. The 1, continually exchanges gases, taking in from the environment and replacing it Tsecheobronchil Figure 1 The human respiratory system Figure 2 The structure of human lungs smalles particles can penetrate the bloodstream, afecting the cardiovascular system, the central nervous system, the kidneys, and bone marrow ys? . Figure 3 View through a microscope of asbestos fibers lodged in lung tissueExplanation / Answer
1) the correct option is option (d) how it woll enter into the blood.
2) the correct option is option (d) healthy and unhealthy conditions..
3) the correct option is option (d)
4) the correct option is option (
5) the correct option are (a), (c), (d)...
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