Cardiovascular System Quiz

Which artery branches off the external iliac artery and provides blood supply to the lower anterior abdominal wall?

• Superior epigastric artery

• Inferior epigastric artery

• Femoral artery

• Renal artery

What effect does myocardial infarction have on a cardiac function curve?

• Increases the slope and maximal height

• Decreases the slope and maximal height

• No change in the slope and maximal height

• Only increases the slope

What is the most common cause of coronary sinus dilation?

• Left atrial pressure

• Pulmonary hypertension

• Systemic hypertension

• Aortic stenosis

During which phase does the majority of left ventricular blood flow occur?

• Systole

• Diastole

• Isovolumetric contraction

• Isovolumetric relaxation

What changes occur in the left ventricular pressure-volume loop with moderate to heavy exercise?

• Decreased preload and increased afterload

• Increased preload and decreased afterload

• Increased preload and increased contractility

• Decreased preload and decreased contractility

Where is the inferior vena cava formed?

• At the level of T12

• At the level of L1-L2

• At the level of L4-L5

• At the level of S1-S2

What happens to the left ventricular pressure-volume loop with an increase in cardiac contractility?

• Shifts down and to the right

• Shifts up and to the left

• Shifts down and to the left

• Shifts up and to the right

On a posteroanterior chest x-ray, which lobe is seen adjacent to the right border of the heart?

• Right upper lobe

• Right middle lobe

• Right lower lobe

• Left upper lobe

What is the result of occlusion of the right coronary artery in 90% of individuals?

• Transmural ischemia of the lateral wall of the left ventricle

• Transmural ischemia of the inferior wall of the left ventricle

• Anteroseptal transmural ischemia

• Transmural ischemia of the right ventricle

Which artery supplies the inferior left ventricular wall in most patients?

• Left circumflex artery

• Right coronary artery

• Left anterior descending artery

• Posterior descending artery