EMBRYOLOGY
RESPIRATORY SYSTEM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Decrease the rate of exchange of respiratory gases between tissues and the surroundings
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Increase the rate of exchange of respiratory gases between the cells
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The air sacs are filled with air
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The air sacs are filled with water
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Detailed explanation-1: -Tracheae connect with the atmosphere through openings called spiracles, which usually have closable valves. Some insects, including grasshoppers, have air sacs that are enlarged tracheae lacking the normal exocuticle and taenidia and are hypothesized to act as bellows to aid convective airflow (for review see Refs.
Detailed explanation-2: -Air sacs are found as tiny sacs off the larger breathing tubes (tracheae) of insects, as extensions of the lungs in birds, and as end organs in the lungs of certain other vertebrates. They serve to increase respiratory efficiency by providing a large surface area for gas exchange.
Detailed explanation-3: -They use holes called spiracles and air sacs to breathe.
Detailed explanation-4: -Tiny air sacs at the end of the bronchioles (tiny branches of air tubes in the lungs). The alveoli are where the lungs and the blood exchange oxygen and carbon dioxide during the process of breathing in and breathing out.