Answer: A and C are the correct answers
Explanation:
Comparing and contrasting a compound light microscope, basically both operate by bouncing tiny particles or waves off of objects in order to make them visible. Electrons are smaller than light photons so we can see smaller objects clearly with electron microscopes. There are disadvantages though. First, color is a function of light wave frequency so we can't see electron micrographs in color. Color can be added artificially though by computer to differentiate structures, (think photoshop). Also, we cannot see electrons so we make them visible by bouncing them off a cathode ray screen similar to a TV set or computer monitor
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<span>RATIONALE: </span>
<span>The patient with chronic obstructive pulmonary disease (COPD) develops a barrel chest over time because trapped air enlarges the lungs and thoracic cavity, thereby reducing chest flexibility. Sunken chest, also known as funnel chest or pectus excavatum, is not related to COPD. Hyperventilation is not characteristically seen with COPD. Instead, the patient usually displays persistent dyspnea on exertion, with or without a chronic cough. Circumoral cyanosis is a bluish discoloration of the skin surrounding the mouth. It is usually an indication of a severely diminished level of oxygen and respiratory distress. Circumoral cyanosis can result from a variety of respiratory diseases and may be a late sign of the COPD disease process.
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Answer: Option D
Explanation:
Restrictive lung disease or disorder are the condition of the extrapulmonary, or parenchymal respiratory disease that resists the expansion of lungs.
This leads to decrease in the lung volume, inadequate ventilation and decreased lung volume and increased work of breathing.
It is also characterized by the decreased residual volume. In this case the amount of air is not expired out completely due to restrictive respiratory disorder.
