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Nature & Animals

Which effect facilitates buoyancy control maintenance in bony fish swim bladders during rapid ascent involving muscular compression reflex?

A)Gas resorption via oval windows
B)Increased hemoglobin oxygen affinity
C)Decreased lactic acid production
D)Enhanced mucus layer secretion

💡 Explanation

During rapid ascent, the swim bladder expands; to maintain buoyancy, fish adjust gas volume through gas resorption via the oval window because increased blood oxygen partial pressure gradients allow efficient transfer. Therefore gas resorption via the oval window results, rather than altered hemoglobin affinity, lactic acid reduction , or mucus changes independent of direct swim bladder control.

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