Exam 21: Anatomy of the Cardiovascular System

The right and left coronary arteries are about equally dominant in hearts; 50% of hearts are right artery dominant and 50% of hearts are left artery dominant.

The general function of both sets of valves in the heart is to prevent blood from flowing back to the chamber it just left.

If damaged,which valve could allow blood to leak back into the right atrium?

Match each artery to its correct anatomical location. -kidney

Because the heart is positioned between two bony structures,CPR can be an effective,lifesaving procedure.

Match each artery to its correct anatomical location. -forearm

The mitral valve has three flaps.

Which of these blood vessels contain precapillary sphincters?

The pulmonary and aortic valves are also called _____ valves.

Precapillary sphincters are located in venules.

Describe the structure and function of a vein.Explain the term capacitance vessel.What is a venous sinus?

As you might expect,most of the nerves leading to the heart end in the sinoatrial node.

Name,describe,and give the function of the heart coverings.

Veins always carry deoxygenated blood.

Ventricles are the pumping chambers of the heart.

Cardiac tamponade is a serious compression of the heart.

Arteries always carry blood away from the heart.

The ventricle of the heart that ejects blood toward the lungs is the:

The pericardium is able to stretch in response to the contraction and relaxation of the heart.

Smooth muscle is found in all parts of the vascular system except the capillaries.