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The two common iliac veins form the

According to the principle of ___, blood near the middle of an artery flows faster than blood near its walls, just as water flows faster in the middle of a river than it does near shore.

Which one of the following hormones reduces blood pressure?

The blood vessel that supplies venous blood to the liver is the

In the cardiovascular system, the _____ circuit carries blood to and from the lungs, which is served by the _____ side of the heart.

Lymphocytes provide an adaptive or specific defense known as the 

The blood vessel that supplies blood to the brain from the anterior direction is the ________ artery.

All of the following are supplied by the celiac trunk except for

The blood vessel that supplies blood to the upper arm is the ________ artery.

Immunoglobulins that are most abundant and are responsible for resistance against many viruses, bacteria, and bacterial toxins are