For a stenosis to be hemodynamically significant, it must cause which of the following?

What is directly regulated by the autonomic nervous system?

How will a persistent increased cardiac afterload condition affect the ventricles?

When optimizing color Doppler, in what order should the controls be utilized?

The facial artery is a branch of which artery?

WhIich 2D linear measurement is outside the range of normal?  

At about the 4th lumbar vertebra, near the level of the umbilicus, the abdominal aorta divides into which right and left vessels?

What structure is located within the green box?

What are the two major branches of the left coronary artery?

The best resolution of an image occurs at the ________________ which would be set at or just posterior to the structure being imaged.