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Air is drawn into and out of the tracheal system by muscular movement of the thoracic and abdominal walls. When the spiracle valves are open, air is drawn into the tracheal system and when the valves close air is forced along the system by the muscle movement. Oxygen diffuses into the cells while carbon dioxide diffuses out of the tissue cells into the fluid then into the tracheal system. The thoracic spiracle valves close as the abdominal spiracles open and gas is released out through the spiracles openings in the abdomen. In severe muscular activity, for example flight, lactic acid accumulates in the tissue. This raises the solute concentration of the tissue fluid drawing water out of the tracheas by osmosis.
Kinyita answered the question on February 11, 2018 at 07:30
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Date posted: February 11, 2018. Answers (1)
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Date posted: February 10, 2018. Answers (1)
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Date posted: February 10, 2018. Answers (1)
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Date posted: February 10, 2018. Answers (1)
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Date posted: February 6, 2018. Answers (1)
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