Tree-Climbing Snakes Spend a Considerable Amount of Time in Vertical

Tree-climbing snakes spend a considerable amount of time in vertical rather than horizontal orientation. In what way might you expect the circulatory system of tree-climbing snakes to differ from that of ground-dwelling snakes?

A) Reduction in the thickness of the walls of the left ventricle
B) Higher blood pressure in arteries leading to the brain
C) Adaptations to overcome the tendency to develop oedema in their heads
D) Regular cardiac output independent of the body position
E) Larger diameter of arteries leading to the head

Correct Answer:

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