Countercurrent heat exchange
A) is an adaptation to shed excess heat from the extremities.
B) transfers heat from a vein to an artery flowing in the same direction.
C) is an adaptation to conserve body heat.
D) is known as vasodilation.
E) occurs only in amphibians and reptiles.

Question

Quizplus · Accepted Answer

Countercurrent heat exchange is a mechanism that helps to conserve body heat by transferring heat from arteries to veins as they pass each other, typically in extremities, to minimize heat loss to the environment. This is especially important in animals living in cold environments.

Countercurrent Heat Exchange