Intermediate Right Coronary Artery Quiz

Q1. After arising from the right aortic sinus, the right coronary artery passes between which structures?

• Right auricle and pulmonary trunk
• Left auricle and pulmonary trunk
• Inferior vena cava and aortic arch
• Superior vena cava and left atrium

Q2. Which early branch of the right coronary artery commonly supplies the infundibulum of the right ventricle?

• Conus branch
• Diagonal branch
• Left marginal branch
• Septal perforating branch of the LAD

Q3. Which branch of the right coronary artery typically supplies the acute margin and adjacent right ventricular myocardium?

• Circumflex artery
• Anterior interventricular artery
• Right marginal artery
• Left marginal artery

Q4. Which myocardial regions are typically supplied by the right coronary artery?

• Entire left ventricle and anterior interventricular septum exclusively
• Pulmonary trunk and pulmonary veins
• Left atrium only
• Right atrium, most of the right ventricle, and part of the diaphragmatic left ventricle

Q5. What anatomical feature principally determines whether a heart is right dominant?

• Origin of the posterior interventricular artery from the right coronary artery
• Size of the right atrium
• Origin of the anterior interventricular artery
• Presence of a right marginal artery

Q6. Near which surface landmark does the right coronary artery commonly give rise to the atrioventricular nodal branch in a right-dominant heart?

• Left auricle
• Crux of the heart
• Apex of the heart
• Pulmonary valve

Q7. Which part of the interventricular septum is usually supplied by the posterior interventricular artery?

• No portion of the septum
• Posterior one-third
• Anterior two-thirds
• Entire septum in every individual

Q8. Which structure is supplied by the right coronary artery in the majority of individuals but not universally?

• Sinoatrial node
• Pulmonary valve
• Entire interventricular septum
• Left ventricular apex exclusively

Q9. Which vein accompanies the posterior interventricular artery in the posterior interventricular sulcus?

• Great cardiac vein
• Middle cardiac vein
• Anterior cardiac vein
• Superior vena cava

Q10. Which statement correctly describes the course of the right coronary artery?

• It travels through the lumen of the right atrium
• It remains entirely within the interventricular septum
• It courses in the right coronary sulcus and reaches the posterior aspect of the heart
• It descends only in the anterior interventricular sulcus