It's very rare for two sets of capillaries to occur in sequence;what physiological challenge could occur in such a situation?
A) All the pressure that maintains blood flow would be depleted in the first capillary set.
B) Blood arriving at a capillary with a low oxygen concentration would pull oxygen from the cells rather than deliver it.
C) Signaling molecules (a hormone,for example)would be removed at the first capillary;the more distant cells could not be regulated.
D) The combined production of carbon dioxide from twice as many cells would irreparably damage the red blood cell.

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The Answer of It's very rare for two sets of capillaries to occur in sequence;what physiological challenge could occur in such a situation?
A) All the pressure that maintains blood flow would be depleted in the first capillary set.
B) Blood arriving at a capillary with a low oxygen concentration would pull oxygen from the cells rather than deliver it.
C) Signaling molecules (a hormone,for example)would be removed at the first capillary;the more distant cells could not be regulated.
D) The combined production of carbon dioxide from twice as many cells would irreparably damage the red blood cell.

It's Very Rare for Two Sets of Capillaries to Occur