Which of the Following is an Example of Bulk Flow

Question

Which of the following is an example of bulk flow during gas exchange in vertebrates?
A)movement of water past a respiratory surface
B)movement of hemolymph throughout the body
C)movement of oxygen from the lung into the bloodstream
D)movement of carbon dioxide from body cells into the bloodstream
E)All of these choices are correct.

Accepted Answer

Bulk flow refers to the movement of a fluid (liquid or gas) in bulk, typically driven by pressure differences. In vertebrates, the movement of water or air past a respiratory surface (such as gills or lungs) is an example of bulk flow, as it involves the movement of large volumes of fluid.