The carcass of a newly discovered deepdiving species of whal

The carcass of a newly discovered deep-diving species of whale washes up on shore, and biologists scramble to study the adaptations that allow it to circulate blood when it is under pressure at depth. A cross section of its flipper shows what seems to be a vein and an artery running parallel. The artery would be the structure with valves to prevent backflow lined with endothelium. with more muscle tissue and elastic in the wall. with the largest interior diameter. All of the above

Solution

Answer -D)with the largest interior diameter

Whales have a very high volume of blood and thus the largest interior diameter of arteries allow blood to quickly pass through the body and move to the vital organs in an effective manner.

Arteries and veins run parallel in flipper to regulate the heat of the body because veins contain cold blood and arteries contain hot blood .Heat from hot blood containing arteries pass to the cold blood in veins through the wall of arteries and veins.

Arteries and veins are made up of high collagen tissues which gives them stiffness and keep them straight.