Why do we consider blood vessel diameter to be the most important factor affecting blood pressure.

When your scared (a lion walks in the door)

During ventricular filling:

1. Is the structure on top-left an artery or vein?  2. Is the structure on bottom-right an artery or vein? 

name these branches of the aorta:

Describe the path a red blood cell would take beginning at the inferior vena cava until it reaches the lungs. Include all valves, chambers, and vessels. 

Name the labeled vessels.

name these vessels of the cardiac circulation: 1 is a vein, 2 and 3 are arteries.

Identify the pathology indicated by the photo on the right

Name the labeled vessel.