1.Why wall of trachea does not collapse when there is less air in it? 2.what is the function of epiglottis? 3. Differentiate between aerobic and anaerobic respiration. 4. How are lungs designed in human beings to maximize area for exchange of gases? 5 Why the rate of breathing is faster in aquatic organisms compared to terrestrial organisms? 6 Draw well labelled diagram of human respiratory system.
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1)because there is c shaped cartilage present in the trachea
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Explanation:
- Trachea is supported by c-shaped rings of cartilage which hold them in place when there is less air inside it. So, the walls of trachea do not collapse even when there is a little air. The cartilage provides support to the trachea which does not collapse even when there is less air in it.
- The epiglottis is a leaf-shaped flap of cartilage located behind the tongue, at the top of the larynx, or voice box. The main function of the epiglottis is to seal off the windpipe during eating, so that food is not accidentally inhale
- Aerobic respiration needs oxygen to occur, while anaerobic does not. This presence of oxygen determines what products will be created. During aerobic respiration, carbon dioxide, water, and ATP are produced. During anaerobic respiration, lactic acid, ethanol, and ATP are created
- The alveoli provide a surface where the exchange of gases can take place. ... The walls of the alveoli are supplied with an extensive network of blood vessels. So lungs maximise the area for gaseous exchange through the presence of large number of alveoli which are richly supplied with blood.
- Since the amount of dissolved oxygen in water is fairly low compared to the amount of oxygen in the air, the rate of breathing in aquatic organisms is much faster due to the low concentration of oxygen in the environment than that seen in terrestrial organisms.
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