The <u>residual air</u> is the amount of air remaining in the lungs after a forced expiration. The volume of air exchanged during normal breathing is called the <u>tidal volume</u>. After a normal inspiration, the amount of air that can then be inspired forcefully is called the <u>inspiratory reserve volume</u>. The total lung capacity minus the residual volume equals the <u>vital capacity</u>. The vital capacity minus the <u>expiratory reserve volume </u>equals the inspiratory capacity. The effects of <u>obstructive disorders</u>, such as asthma or emphysema, may be determined by measuring rapid exhalation with a spirometer.
The lungs are the main organs of the respiratory system. These lungs are also the site of exchange of gases. The air is inspired through the nostrils and this air then reaches the lungs, where the oxygen from air is trapped in the alveoli. This oxygen then diffuses into the bloodstream through capillaries, which is then sent to the heart. From the heart this oxygenated blood travels to different parts of the body. There are several different units of measurement that are used for the measurement of inspired and expired air and their volume.
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The best answer is c) trust me
A. Exhibit a period of rapid growth as the population size increases.
Answer:
C. In the third stage, fuel molecules are completely oxidized to CO2 , and most of the ATP needed for cellular processes is produced.
Explanation:
The three stages in the generation of energy from the oxidation of foodstuffs are given below:
First stage - This stage is the preparation stage and no useful energy is produced in this stage. In this stage, large molecules in food are broken down into smaller units. Proteins are broken down to amino acids, polysaccharides to simple sugars such as glucose, and fats are broken down to glycerol and fatty acids.
Second stage - In this stage, the various small molecules from the first stage are degraded to simple units (mostly acetyl-CoA) that are useful in metabolic activities of the body. Few ATP molecules are generated in this stage.
Third stage - In this final stage, most of the ATP required for cellular processes is produced from the complete oxidation of the acetyl unit of acetyl CoA to CO₂ in the citric acid cycle as well the oxidation of the electron carriers NADH and FADH₂ in oxidative phosphorylation.
