Cardiovascular

What is the function of the tunica externa?

• Contracts to move the blood through the vessel

• Anchors the vessel to surrounding tissue

• Secretes a chemical to repel platelets so blood can easily flow through the vessel

• None of these are correct.

Which of the following combining forms means ventricle?

• vas/o

• vascul/o

• ven/o

• ventricul/o

Blood leaves the right ventricle through what structure?

• Tricuspid valve

• Pulmonary valve

• Pulmonary trunk

• Bicuspid valve

What structure separates the right ventricle from the left ventricle?

• Interventricular septum

• Coronary sulcus

• Anterior interventricular sulcus

• Interatrial sulcus

Blood leaves the left atrium and enters what chamber of the heart?

• Right ventricle

• Left ventricle

• Right atrium

• Left atrium

What term describes the pressure in the pulmonary trunk and aorta during diastole?

• Frank-Starling law of the heart

• Afterload

• Contractility

• Preload

What term describes the fact that the heart must pump out the amount of blood it receives?

• Frank-Starling law of the heart

• Afterload

• Contractility

• Preload

What is the smallest of all blood vessels?

• Arteriole

• Vein

• Capillary

• Venule

What is the function of capillaries?

• Carry blood away from the heart.

• Carry blood toward the heart.

• Exchange fluids and other materials between the tissues and the blood.

• All of these are functions of capillaries.

Which disorder is caused by dysfunctional valves in the veins that allow the backflow and pooling of blood, resulting in enlarged veins?

• Aneurysm

• Coronary artery disease

• Varicose veins

• Thrombophlebitis