-The thin horizontal arrows in the figure show that
A)the warmer arterial blood can bypass the legs as needed when the legs are too cold to function well.
B)the warmer venous blood transfers heat to the cooler arterial blood.
C)the warmer arterial blood transfers heat to the cooler venous blood.
D)the arterial blood is always cooler in the abdomen,compared to the temperature of the venous blood in the feet of the goose.
E)the goose's legs get progressively warmer as the blood moves away from the abdomen to the feet.

Question

-The thin horizontal arrows in the figure show that
A)the warmer arterial blood can bypass the legs as needed when the legs are too cold to function well. 
B)the warmer venous blood transfers heat to the cooler arterial blood. 
C)the warmer arterial blood transfers heat to the cooler venous blood. 
D)the arterial blood is always cooler in the abdomen,compared to the temperature of the venous blood in the feet of the goose. 
E)the goose's legs get progressively warmer as the blood moves away from the abdomen to the feet.

Quizplus · Accepted Answer

The thin horizontal arrows indicate a counter-current heat exchange system, where warmer arterial blood transfers heat to the cooler venous blood returning to the body's core, thus conserving body heat.

-The Thin Horizontal Arrows in the Figure Show That