An increase in the volume of the thoracic cavity _________ the  pressure, which causes _________.

During bacterial infections, the accumulation of dead cells, immune cells, and chemical mediators that form a thick whitish fluid is called_________.

Which chamber receives deoxyginated blood fro the inferior and superior vena cava?

Diastole represents ____________________

The left ventricle pumps _________ blood through the _________ valve.

The smooth muscle of the vessel is the ________________________.

The first heart sound (lub) results from the closing of the _________ valves in the beginning of _________.

The serous membrane colsest to the heart id the _________________.

The visceral layer of serous pericardium is also known as _________.

The _________ pumps blood into the aorta.