A penguin's feet are nearly as cold as ice,while the bird's core body temperature is much higher.Which of the following explains this observation?

Question

Quizplus · Accepted Answer

Countercurrent heat exchange is a mechanism by which heat is transferred from warm blood in arteries to cold blood in veins, thereby maintaining a temperature gradient where warm arterial blood transfers heat to adjacent veins through the thin walls of capillaries. This causes the blood in the veins to become warmer as it approaches the body's core, while the blood in the arteries becomes cooler as it approaches the extremities, such as the feet. This is an adaptation that helps penguins to conserve heat and maintain a higher core body temperature, while minimizing heat loss through the feet.

A Penguin's Feet Are Nearly as Cold as Ice,while the Bird's