Test on heart blood supply anatomy

Assess your knowledge of cardiac circulation anatomy. The test checks the topology of the coronary vessels, their branching, and supply zones.

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1. Where do the right and left coronary arteries originate?

In the pulmonary trunk

The coronary arteries arise from the right and left sinuses of the aorta (sinuses of Valsalva) in the region of the ascending aorta bulb (bulbus aortae).
In the aortic bulb

The coronary arteries arise from the right and left sinuses of the aorta (sinuses of Valsalva) in the region of the ascending aorta bulb (bulbus aortae).
In the aortic arch

The coronary arteries arise from the right and left sinuses of the aorta (sinuses of Valsalva) in the region of the ascending aorta bulb (bulbus aortae).
In the descending aorta

The coronary arteries arise from the right and left sinuses of the aorta (sinuses of Valsalva) in the region of the ascending aorta bulb (bulbus aortae).
I find it difficult to answer

The coronary arteries arise from the right and left sinuses of the aorta (sinuses of Valsalva) in the region of the ascending aorta bulb (bulbus aortae).

2. Between which structures does the left coronary artery pass at its initial segment?

Between the pulmonary trunk and the left auricle

The left coronary artery (a. coronaria sinistra) emerges from the left aortic sinus and lays in the coronary sulcus between the pulmonary trunk and the left atrial auricle.
Between the aorta and the right auricle

The left coronary artery (a. coronaria sinistra) emerges from the left aortic sinus and lays in the coronary sulcus between the pulmonary trunk and the left atrial auricle.
Between the superior vena cava and the right atrium

The left coronary artery (a. coronaria sinistra) emerges from the left aortic sinus and lays in the coronary sulcus between the pulmonary trunk and the left atrial auricle.
Between the pulmonary veins and the left atrium

The left coronary artery (a. coronaria sinistra) emerges from the left aortic sinus and lays in the coronary sulcus between the pulmonary trunk and the left atrial auricle.
I find it difficult to answer

The left coronary artery (a. coronaria sinistra) emerges from the left aortic sinus and lays in the coronary sulcus between the pulmonary trunk and the left atrial auricle.

3. Into which main branches does the trunk of the left coronary artery divide?

Into the marginal and posterior interventricular branches

Trunk of a. coronaria sinistra usually divides into the anterior interventricular (r. interventricularis anterior) and circumflex (r. circumflexus) branches.
Into the diagonal and atrial branches

Trunk of a. coronaria sinistra usually divides into the anterior interventricular (r. interventricularis anterior) and circumflex (r. circumflexus) branches.
Into the sinoatrial and atrioventricular branches

Trunk of a. coronaria sinistra usually divides into the anterior interventricular (r. interventricularis anterior) and circumflex (r. circumflexus) branches.
Into the circumflex and anterior interventricular branches

Trunk of a. coronaria sinistra usually divides into the anterior interventricular (r. interventricularis anterior) and circumflex (r. circumflexus) branches.
I find it difficult to answer

Trunk of a. coronaria sinistra usually divides into the anterior interventricular (r. interventricularis anterior) and circumflex (r. circumflexus) branches.

4. Which vein accompanies the anterior interventricular branch of the left coronary artery?

Middle cardiac vein

The great cardiac vein (v. cordis magna) starts at the apex of the heart and travels in the anterior interventricular groove together with r. anterior interventricular.
Small cardiac vein

The great cardiac vein (v. cordis magna) starts at the apex of the heart and travels in the anterior interventricular groove together with r. anterior interventricular.
Great cardiac vein

The great cardiac vein (v. cordis magna) starts at the apex of the heart and travels in the anterior interventricular groove together with r. anterior interventricular.
Anterior cardiac vein

The great cardiac vein (v. cordis magna) starts at the apex of the heart and travels in the anterior interventricular groove together with r. anterior interventricular.
I find it difficult to answer

The great cardiac vein (v. cordis magna) starts at the apex of the heart and travels in the anterior interventricular groove together with r. anterior interventricular.

5. Which artery branch in most cases (about 60%) supplies the sinuatrial node?

Left coronary artery

The branch of the sinuatrial node (r. nodi sinuatrialis) most commonly is a branch of the right coronary artery.
Circumflex artery

The branch of the sinuatrial node (r. nodi sinuatrialis) most commonly is a branch of the right coronary artery.
Right coronary artery

The branch of the sinuatrial node (r. nodi sinuatrialis) most commonly is a branch of the right coronary artery.
Anterior interventricular artery

The branch of the sinuatrial node (r. nodi sinuatrialis) most commonly is a branch of the right coronary artery.
I find it difficult to answer

The branch of the sinuatrial node (r. nodi sinuatrialis) most commonly is a branch of the right coronary artery.

6. Which artery's continuation is the posterior interventricular branch in the rightdominant pattern of heart blood supply?

Circumflex branch

In the dominance of the right coronary artery, it continues to the diaphragmatic surface as r. posterior interventricular.
Right coronary artery

In the dominance of the right coronary artery, it continues to the diaphragmatic surface as r. posterior interventricular.
Left coronary artery

In the dominance of the right coronary artery, it continues to the diaphragmatic surface as r. posterior interventricular.
Anterior interventricular branch

In the dominance of the right coronary artery, it continues to the diaphragmatic surface as r. posterior interventricular.
I find it difficult to answer

In the dominance of the right coronary artery, it continues to the diaphragmatic surface as r. posterior interventricular.

7. Which structures are predominantly supplied by the anterior interventricular branch of the left coronary artery?

Posterior left ventricular wall

R. anterior interventricular supplies the anterior parts of both ventricles, the anterior two-thirds of the interventricular septum, and the apex of the heart.
The free wall of the right atrium

R. anterior interventricular supplies the anterior parts of both ventricles, the anterior two-thirds of the interventricular septum, and the apex of the heart.
Interatrial septum

R. anterior interventricular supplies the anterior parts of both ventricles, the anterior two-thirds of the interventricular septum, and the apex of the heart.
The anterior walls of both ventricles and the anterior two-thirds of the interventricular septum.

R. anterior interventricular supplies the anterior parts of both ventricles, the anterior two-thirds of the interventricular septum, and the apex of the heart.
I find it difficult to answer

R. anterior interventricular supplies the anterior parts of both ventricles, the anterior two-thirds of the interventricular septum, and the apex of the heart.

8. In which anatomical structure is the coronary sinus of the heart located?

In the anterior interventricular sulcus

The coronary sinus (sinus coronarius) lies in the posterior part of the coronary groove between the left atrium and the left ventricle.
In the posterior interventricular groove

The coronary sinus (sinus coronarius) lies in the posterior part of the coronary groove between the left atrium and the left ventricle.
In the coronary groove on the diaphragmatic surface

The coronary sinus (sinus coronarius) lies in the posterior part of the coronary groove between the left atrium and the left ventricle.
In the marginal groove of the right atrium

The coronary sinus (sinus coronarius) lies in the posterior part of the coronary groove between the left atrium and the left ventricle.
I find it difficult to answer

The coronary sinus (sinus coronarius) lies in the posterior part of the coronary groove between the left atrium and the left ventricle.

9. Which vein is located in the posterior interventricular groove?

Great cardiac vein

The middle cardiac vein (v. cordis media) travels in the sulcus interventricularis posterior and drains into the coronary sinus.
Small cardiac vein

The middle cardiac vein (v. cordis media) travels in the sulcus interventricularis posterior and drains into the coronary sinus.
Oblique vein of the left atrium

The middle cardiac vein (v. cordis media) travels in the sulcus interventricularis posterior and drains into the coronary sinus.
Middle cardiac vein

The middle cardiac vein (v. cordis media) travels in the sulcus interventricularis posterior and drains into the coronary sinus.
I find it difficult to answer

The middle cardiac vein (v. cordis media) travels in the sulcus interventricularis posterior and drains into the coronary sinus.

10. Which cardiac veins open directly into the right atrium, bypassing the coronary sinus?

Anterior cardiac veins and the smallest cardiac veins

The anterior cardiac veins (vv. cordis anteriores) and the smallest cardiac veins (vv. cordis minimae, veins of Thebesius-Viessen) empty directly into the right atrium.
Great and small cardiac veins

The anterior cardiac veins (vv. cordis anteriores) and the smallest cardiac veins (vv. cordis minimae, veins of Thebesius-Viessen) empty directly into the right atrium.
Posterior vein of the left ventricle and middle vein

The anterior cardiac veins (vv. cordis anteriores) and the smallest cardiac veins (vv. cordis minimae, veins of Thebesius-Viessen) empty directly into the right atrium.
Oblique vein of the left atrium

The anterior cardiac veins (vv. cordis anteriores) and the smallest cardiac veins (vv. cordis minimae, veins of Thebesius-Viessen) empty directly into the right atrium.
I find it difficult to answer

The anterior cardiac veins (vv. cordis anteriores) and the smallest cardiac veins (vv. cordis minimae, veins of Thebesius-Viessen) empty directly into the right atrium.

11. In which groove does the small cardiac vein (v. cordis parva) run before entering the coronary sinus?

In the coronary groove

The small cardiac vein runs in the right portion of the coronary groove (sulcus coronarius) and drains into the coronary sinus or into the middle cardiac vein.
In the anterior interventricular sulcus

The small cardiac vein runs in the right portion of the coronary groove (sulcus coronarius) and drains into the coronary sinus or into the middle cardiac vein.
In the marginal groove

The small cardiac vein runs in the right portion of the coronary groove (sulcus coronarius) and drains into the coronary sinus or into the middle cardiac vein.
In the terminal groove

The small cardiac vein runs in the right portion of the coronary groove (sulcus coronarius) and drains into the coronary sinus or into the middle cardiac vein.
I find it difficult to answer

The small cardiac vein runs in the right portion of the coronary groove (sulcus coronarius) and drains into the coronary sinus or into the middle cardiac vein.

12. Along which anatomical landmark does the right marginal branch (r. marginalis dexter) pass?

Along the left border of the heart towards the apex

The right marginal branch arises from a. coronaria dextra and is directed along margo dexter of the heart towards its apex.
Along the anterior interventricular groove

The right marginal branch arises from a. coronaria dextra and is directed along margo dexter of the heart towards its apex.
Along the right (acute) border of the heart towards the apex

The right marginal branch arises from a. coronaria dextra and is directed along margo dexter of the heart towards its apex.
Along the posterior interventricular groove

The right marginal branch arises from a. coronaria dextra and is directed along margo dexter of the heart towards its apex.
I find it difficult to answer

The right marginal branch arises from a. coronaria dextra and is directed along margo dexter of the heart towards its apex.

13. Where is the most pronounced intrasystemic arterial anastomosis between the systems of the right and left coronary arteries located?

At the opening of the superior vena cava

The largest anastomosis is formed at the apex of the heart between the anterior (from the left) and posterior (from the right) interventricular arteries.
On the anterior wall of the right atrium

The largest anastomosis is formed at the apex of the heart between the anterior (from the left) and posterior (from the right) interventricular arteries.
In the thickness of the free wall of the left ventricle

The largest anastomosis is formed at the apex of the heart between the anterior (from the left) and posterior (from the right) interventricular arteries.
At the heart apex area

The largest anastomosis is formed at the apex of the heart between the anterior (from the left) and posterior (from the right) interventricular arteries.
I find it difficult to answer

The largest anastomosis is formed at the apex of the heart between the anterior (from the left) and posterior (from the right) interventricular arteries.

14. Which artery most often gives off a branch to the atrioventricular node (AV node)?

Circumflex branch

The branch of the atrioventricular node (r. nodi atrioventricularis) usually arises from a. coronaria dextra at the crossing of the grooves (crux cordis).
Right coronary artery (in the region of the heart cross)

The branch of the atrioventricular node (r. nodi atrioventricularis) usually arises from a. coronaria dextra at the crossing of the grooves (crux cordis).
Anterior interventricular branch

The branch of the atrioventricular node (r. nodi atrioventricularis) usually arises from a. coronaria dextra at the crossing of the grooves (crux cordis).
Left marginal artery

The branch of the atrioventricular node (r. nodi atrioventricularis) usually arises from a. coronaria dextra at the crossing of the grooves (crux cordis).
I find it difficult to answer

The branch of the atrioventricular node (r. nodi atrioventricularis) usually arises from a. coronaria dextra at the crossing of the grooves (crux cordis).

15. From which artery does the left marginal branch (r. marginalis sinister) arise?

From the anterior interventricular branch

The left marginal branch arises from the circumflex branch (r. circumflexus) of the left coronary artery and descends along the obtuse margin (margo obtusus) of the heart.
From the diagonal branch

The left marginal branch arises from the circumflex branch (r. circumflexus) of the left coronary artery and descends along the obtuse margin (margo obtusus) of the heart.
From the right coronary artery

The left marginal branch arises from the circumflex branch (r. circumflexus) of the left coronary artery and descends along the obtuse margin (margo obtusus) of the heart.
From the circumflex branch

The left marginal branch arises from the circumflex branch (r. circumflexus) of the left coronary artery and descends along the obtuse margin (margo obtusus) of the heart.
I find it difficult to answer

The left marginal branch arises from the circumflex branch (r. circumflexus) of the left coronary artery and descends along the obtuse margin (margo obtusus) of the heart.

16. What embryonic structure's remnant is the oblique vein of the left atrium (Marshall's vein)?

Right superior vena cava

The oblique vein of the left atrium (v. obliqua atrii sinistri) is a remnant of the embryonic left superior vena cava (left Cuvier's duct).
Left superior vena cava

The oblique vein of the left atrium (v. obliqua atrii sinistri) is a remnant of the embryonic left superior vena cava (left Cuvier's duct).
Inferior vena cava

The oblique vein of the left atrium (v. obliqua atrii sinistri) is a remnant of the embryonic left superior vena cava (left Cuvier's duct).
Venous sinus

The oblique vein of the left atrium (v. obliqua atrii sinistri) is a remnant of the embryonic left superior vena cava (left Cuvier's duct).
I find it difficult to answer

The oblique vein of the left atrium (v. obliqua atrii sinistri) is a remnant of the embryonic left superior vena cava (left Cuvier's duct).

17. Into which heart chambers do the smallest cardiac veins (vv. cordis minimae) predominantly open?

Into the right atrium and the right ventricle

The smallest cardiac veins (Veins of Viessen-Thebesian) predominantly open into the chambers of the right half of the heart (atrium and ventricle).
Only into the left atrium

The smallest cardiac veins (Veins of Viessen-Thebesian) predominantly open into the chambers of the right half of the heart (atrium and ventricle).
Into the left atrium and left ventricle

The smallest cardiac veins (Veins of Viessen-Thebesian) predominantly open into the chambers of the right half of the heart (atrium and ventricle).
Exclusively into the coronary sinus

The smallest cardiac veins (Veins of Viessen-Thebesian) predominantly open into the chambers of the right half of the heart (atrium and ventricle).
I find it difficult to answer

The smallest cardiac veins (Veins of Viessen-Thebesian) predominantly open into the chambers of the right half of the heart (atrium and ventricle).

18. With which arteries do the coronary arteries form extracardiac anastomoses in the epicardium and pericardium?

With the pulmonary arteries

Extra-organ anastomoses of the coronary arteries are performed with the vessels of the pericardium (pericardiophrenic arteries) and mediastinum (bronchial, esophageal branches).
With the inferior epigastric arteries

Extra-organ anastomoses of the coronary arteries are performed with the vessels of the pericardium (pericardiophrenic arteries) and mediastinum (bronchial, esophageal branches).
With the pericardiophrenic and bronchial branches

Extra-organ anastomoses of the coronary arteries are performed with the vessels of the pericardium (pericardiophrenic arteries) and mediastinum (bronchial, esophageal branches).
With the posterior intercostal arteries

Extra-organ anastomoses of the coronary arteries are performed with the vessels of the pericardium (pericardiophrenic arteries) and mediastinum (bronchial, esophageal branches).
I find it difficult to answer

Extra-organ anastomoses of the coronary arteries are performed with the vessels of the pericardium (pericardiophrenic arteries) and mediastinum (bronchial, esophageal branches).

19. From which artery do the diagonal branches (rr. diagonales) that supply the anterolateral wall of the left ventricle originate?

From the posterior interventricular branch

The diagonal branches originate from r. interventricularis anterior (sometimes from the trunk of the left artery) and run to the anterolateral wall of the left ventricle.
From the right marginal branch

The diagonal branches originate from r. interventricularis anterior (sometimes from the trunk of the left artery) and run to the anterolateral wall of the left ventricle.
From the anterior interventricular branch

The diagonal branches originate from r. interventricularis anterior (sometimes from the trunk of the left artery) and run to the anterolateral wall of the left ventricle.
From the sinoatrial branch

The diagonal branches originate from r. interventricularis anterior (sometimes from the trunk of the left artery) and run to the anterolateral wall of the left ventricle.
I find it difficult to answer

The diagonal branches originate from r. interventricularis anterior (sometimes from the trunk of the left artery) and run to the anterolateral wall of the left ventricle.

20. From where do the anterior septal branches (rr. interventriculares septales), supplying the anterior 2/3 of the interventricular septum, originate?

From the anterior interventricular branch

The anterior 2/3 of the interventricular septum is vascularized by septal branches from r. interventricularis anterior (branches of the left coronary artery).
From the circumflex branch

The anterior 2/3 of the interventricular septum is vascularized by septal branches from r. interventricularis anterior (branches of the left coronary artery).
From the posterior interventricular branch

The anterior 2/3 of the interventricular septum is vascularized by septal branches from r. interventricularis anterior (branches of the left coronary artery).
From the right coronary artery

The anterior 2/3 of the interventricular septum is vascularized by septal branches from r. interventricularis anterior (branches of the left coronary artery).
I find it difficult to answer

The anterior 2/3 of the interventricular septum is vascularized by septal branches from r. interventricularis anterior (branches of the left coronary artery).