The Circle of Willis is located at the base of the brain and is made up of anastomoses to protect oxygen flow to the brain.

The T wave of the Electrocardiogram is generated by atrial repolarization.

Stroke Volume is the amount of blood ejected by each ventricle in one minute.

The following 5 questions refer to this case study.  Sarah is a mother who is pregnant with her second child.  Several tests are performed.  One test is to make sure that her Rh factor is compatible with the fetus.  Sarah’s baby could be in danger if the following was found:

If all the nerves to the heart were severed, the heart would instantly stop beating.

Which of the following carries oxygen-poor blood FROM the heart to the lungs?

Each of the following is true about the growth hormone, EXCEPT:

In regards to the ABO blood group, type A- blood has ____________.

The coronary arteries are responsible for supplying blood to the heart.  Which is not part of the coronary artery system?

One cause of anemia is inadequate amounts of B12.