Vessels of the heart

Vessels of the heart. Blood supply to the heartCoronary arteries and their branches. Veins of the heart
~ 8 min

Vessels of the heart. Blood supply to the heart

The heart receives arterial blood from the aorta through the right and left coronary arteries, the branches of which form anastomoses with each other.

The branches of the coronary arteries break up to capillaries, which supply all the membranes of the heart, papillary muscles, chords, and valves with blood

The right coronary artery (arteria coronaria dextra) arises from the aorta at the level of the right sinus of Valsalva.

Right coronary artery (arteria coronaria dextra)
Right coronary artery (arteria coronaria dextra)
Right coronary artery (arteria coronaria dextra)
Right coronary artery (arteria coronaria dextra)

It is located in the atrioventricular sulcus, passing to the lower surface of the heart, where it breaks down into small branches and forms anastomoses with branches of the left coronary artery.

Branches of the right coronary artery:

  1. The arterial conus branch (ramus coni arteriosi) is located in the area of the orifice of the pulmonary trunk, and supplies the outflow tract of the pulmonary trunk with blood

    Arterial conus branch (ramus coni arteriosi)
    Arterial conus branch (ramus coni arteriosi)
  2. The acute marginal artery or the right marginal branch (ramus marginalis dexter) passes along the right edge of the heart and supplies the wall of the right ventricle with blood

    Acute marginal artery or the right marginal branch (ramus marginalis dexter)
    Acute marginal artery or the right marginal branch (ramus marginalis dexter)
  3. The artery (branch) of the sinuatrial node (ramus nodi sinuatrialis) approaches the sinuatrial node and supplies it with blood

    Artery (branch) of the sinuatrial node (ramus nodi sinuatrialis)
    Artery (branch) of the sinuatrial node (ramus nodi sinuatrialis)
  4. The posterior interventricular branch (posterior descending artery) (arteria interventricularis posterior) passes through the posterior interventricular sulcus, anastomoses with the anterior interventricular artery. It supplies the posterior region of the interventricular septum with blood

    Posterior interventricular branch (arteria interventricularis posterior)
    Posterior interventricular branch (arteria interventricularis posterior)
  5. The branch of the atrioventricular node (ramus nodi atrioventricularis) approaches the atrioventricular node in the thickness of the interatrial node and supplies it with blood

Branch of the atrioventricular node (ramus nodi atrioventricularis)
Branch of the atrioventricular node (ramus nodi atrioventricularis)

The left coronary artery (arteria coronaria sinistra) arises from the aorta at the level of the left sinus of Valsalva.

Left coronary artery (arteria coronaria sinistra)
Left coronary artery (arteria coronaria sinistra)

Branches of the left coronary artery:

  1. The anterior interventricular branch or anterior descending artery (ramus interventricularis anterior) is located in the anterior interventricular sulcus and supplies the anterior region of the interventricular septum, the anterior wall of the left and right ventricles, and the apex of the heart with blood

    Anterior interventricular branch or anterior descending artery (ramus interventricularis anterior)
    Anterior interventricular branch or anterior descending artery (ramus interventricularis anterior)
  2. The diagonal branch (ramus diagonalis) runs along the anterolateral surface of the heart and supplies the anterolateral surface of the left ventricle with blood

    Diagonal branch (ramus diagonalis)
    Diagonal branch (ramus diagonalis)
  3. The circumflex branch (ramus circumflexus) is located in the coronary sulcus and supplies the posterior surface of the left ventricle with blood

    Circumflex branch (ramus circumflexus)
    Circumflex branch (ramus circumflexus)
    Circumflex branch (ramus circumflexus)
    Circumflex branch (ramus circumflexus)
  4. The obtuse marginal artery, or the left marginal branch (ramus marginalis sinister) passes along the left lateral surface of the heart, and supplies the lateral and posterior parts of the left ventricle with blood

    Obtuse marginal artery, or the left marginal branch (ramus marginalis sinister)
    Obtuse marginal artery, or the left marginal branch (ramus marginalis sinister)
  5. The septal interventricular branches (rr. interventriculares septales) pass through the thickness of the interventricular septum and supply the interventricular septum with blood

    Septal interventricular branches (rr. interventriculares septales)
    Septal interventricular branches (rr. interventriculares septales)
  6. The intermediate artery (ramus intermedius) is located mainly on the lateral wall of the left ventricle, and supplies the lateral wall of the left ventricle with blood.

Intermediate artery (ramus intermedius)
Intermediate artery (ramus intermedius)

The number of heart veins is greater than the number of heart arteries. Venous outflow from the myocardium goes through the coronary sinus (sinus coronarius) into the right atrium.

Coronary sinus (sinus coronarius)
Coronary sinus (sinus coronarius)

The tributaries of the coronary sinus are:

  1. The great cardiac vein (vena cordis magna) is located anteriorly in the anterior interventricular sulcus next to the anterior interventricular branch of the left coronary artery, turns to the left and passes along the posterior surface in the coronal sulcus, where it ends by the coronary sinus. It drains blood from the anterior and posterior sides of the right and left ventricles and the interventricular septum.

    Great cardiac vein (vena cordis magna)
    Great cardiac vein (vena cordis magna)
    Great cardiac vein (vena cordis magna)
    Great cardiac vein (vena cordis magna)
  2. The middle cardiac vein (vena cordis media) is located in the posterior interventricular sulcus, flows into the coronary sinus. It drains blood from the posterior walls of the right and left ventricles and the apex of the heart.

    Middle cardiac vein (vena cordis media)
    Middle cardiac vein (vena cordis media)
  3. The small cardiac vein (vena cordis parva) passes along the lateral surface of the right ventricle and ends by the coronary sinus. It drains blood from the walls of the right ventricle.

    Small cardiac vein (vena cordis parva)
    Small cardiac vein (vena cordis parva)
  4. The posterior vein of the left ventricle (vena ventriculi sinistri posterior) lies on the posterior wall of the left ventricle and ends by the coronary sinus or the great cardiac vein. It carries out the blood outflow from the posterior wall of the left ventricle.

    Posterior vein of the left ventricle (vena ventriculi sinistri posterior)
    Posterior vein of the left ventricle (vena ventriculi sinistri posterior)
  5. The oblique vein of the left atrium (vena obliqua atrii sinistri) is located on the posterior wall of the left atrium and ends by the coronary sinus. It drains blood from the left atrium.

    Oblique vein of the left atrium (vena obliqua atrii sinistri)
    Oblique vein of the left atrium (vena obliqua atrii sinistri)
  6. The anterior cardiac veins (venae cordis anteriores) are small tributaries located on the anterior surface of the right ventricle, which end by the right atrium. They drain blood from the anterior wall of the right ventricle.

    Anterior cardiac veins (venae cordis anteriores)
    Anterior cardiac veins (venae cordis anteriores)
  7. The smallest (Thebesian) cardiac veins (venae cardiacae minimae) arise from the thickness of the myocardium and end directly by the right and left atria, and some of them end by the ventricles.

The lymph outflow of the heart is carried out to the inferior tracheobronchial and anterior mediastinal lymph nodes.

The innervation of the heart occurs through the sympathetic and parasympathetic nervous system.

Sympathetic nerve fibers in the composition of cardiac nerves contribute to the acceleration of the heart rate and expand the lumen of the coronary arteries.

Parasympathetic nerve fibers slow down the heart rate and narrow the lumen of the coronary arteries.

Dictionary

Vessels of the heart.Blood supply to the heart

Right coronary artery
arteria coronaria dextra
Arterial conus branch
ramus coni arteriosi
Right marginal branch
ramus marginalis dexter
Sinoatrial node artery
arteria nodi sinoatrialis
Posterior interventricular branch
arteria interventricularis posterior
Posterolateral artery
arteria lateralis posterior
Atrioventricular node branch
ramus nodi atrioventricularis
Left coronary artery
arteria coronaria sinistra
Anterior interventricular branch
ramus interventricularis anterior
Diagonal branch
ramus diagonalis
Circumflex branch
ramus circumflexus
Left marginal branch
ramus marginalis sinister
Septal interventricular branches
rr. septalis
Intermediate artery
ramus intermedius
Coronary sinus
sinus coronarus
Great cardiac vein
vena cordis magna
Middle cardiac vein
vena cordis media
Small cardiac vein
vena cordis parva
Posterior vein of the left ventricle
vena posterior ventriculi sinistri
Obliquae vein of left atrium
vena obliqua atrii sinistri
Anterior cardiac veins
venae cardiacae anteriores
The smallest cardiac veins
venae cardiacae minimae
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