AN22.1-7 | Heart & Pericardium — Practice Quiz

The transverse sinus of the pericardium lies posterior to which two great vessels?

The fossa ovalis, the remnant of the foramen ovale, is located on the:

A 30-year-old man is brought to the emergency department after a stab wound to the chest. He has distended neck veins, hypotension, and muffled heart sounds. The emergency physician diagnoses cardiac tamponade. Which property of the pericardium explains why even a small amount of rapid bleeding can be life-threatening?

The wall of the left ventricle is approximately three times thicker than the right ventricle. This difference is best explained by the fact that the left ventricle:

The fibrous skeleton of the heart electrically insulates the atria from the ventricles. What is the ONLY normal pathway for electrical impulses to pass from the atria to the ventricles?

The left anterior descending (LAD) artery runs in the anterior interventricular groove and supplies the anterior wall of the left ventricle. Which additional territory does it supply?

A 55-year-old man with diabetes and hyperlipidaemia presents with severe crushing chest pain radiating to the left arm. ECG shows ST elevation in leads II, III, and aVF. Which coronary artery is most likely occluded?

The coronary sinus drains into which chamber of the heart?

A patient with an inferior MI develops complete heart block (no conduction from atria to ventricles). The ventricles are beating at 35 bpm via an escape rhythm. Which structure of the conducting system is most likely damaged?

The septomarginal trabecula (moderator band) in the right ventricle carries an important component of the conducting system from the interventricular septum to the anterior papillary muscle. Which component is this?