Through which of the following vessels does oxygenated blood return to the heart from the lungs?

What is #12? Screen Shot 2020-04-21 at 10.21.08 PM(8).png

What vessels below serve as a blood supply to the heart muscle itself?

______________ always carry blood away from the heart.

In the fetus, the umbilical _____________ in the umbilical cord carries oxygen from the placenta to the fetus.

What is #14? Screen Shot 2020-04-21 at 10.21.08 PM(6).png

The human body has only one ____, but has two of each of the rest of the following vessels.

What is the name of the vessel labeled #74? IMG_0205.jpg

What is the name of the vessel labeled #62? Scroll up to #57 to see the diagram.

At its inferior end, the aorta branches into right and left _____ arteries.