25. Which one of the following statements is NOT true regarding the respiration system?
(A) In fish gills, more than 80% of the O2 dissolved in the water is removed as water passes over the respiratory surface.
(B) Respiratory surfaces are always thin and moist.
(C) Fish gills use a countercurrent exchange system to increase blood flow.
(D) In human lungs, cilia and mucus line the epithelium of the air ducts and move particles up to the pharynx.

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統計： A(8), B(2), C(13), D(10), E(0) #3162447

詳解 (共 3 筆)

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(C) Fish gills use a countercurrent exchange system to increase blood flow 獲氧

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