ANIMAL PHYSIOLOGY
DIGESTION IN DIFFERENT ANIMALS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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spongy saclike respiratory organs that oxygenate the blood and remove its carbon dioxide
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respiratory system in insects consists of a network of tubes that directly ventilage the tissue
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tiny pores on the leaves that help in the exchange of gases
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the respiratory organ of aquatic animals, as fish
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Detailed explanation-1: -Listen to pronunciation. (al-VEE-oh-ly) 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.
Detailed explanation-2: -The lungs are soft and spongy because they are mostly air spaces surrounded by the alveolar cells and elastic connective tissue. They are separated from each other by the mediastinum, which contains the heart. The only point of attachment for each lung is at the hilum, or root, on the medial side.
Detailed explanation-3: -This exchange of oxygen and carbon dioxide is called respiration.
Detailed explanation-4: -The alveoli are the sites of gas exchange; they are located at the terminal regions of the lung and are attached to the respiratory bronchioles. The acinus is the structure in the lung where gas exchange occurs. The sac-like structure of the alveoli increases their surface area.