How does the Supreme Court exercise discretion in selecting cases?

What is a key benefit of the dual court system in the United States?

Which tissue layer of the heart is not composed of connective tissue?

Bonus Question: Describe the path a blood cell would take as it travels from the lungs to the aorta. Include all valves, chambers, and vessels. 

1. Name the leukocyte indicated by the pointer below 2. Is this a granulocyte or agranulocyte

Name the great vessels of the heart:

Which clause in the U.S. Constitution grants Congress the authority to make laws beyond its enumerated powers?

An increase in preload would result in:

Select all that apply: What factors affect peripheral resistance?

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