Anatomy (Cardiovascular system) · MU Sofia

106. Blood supply of the heart - arteries and veins.

Covers the arterial supply of the heart, starting with the right coronary artery from the right aortic sinus, its course along the coronary groove, its branches and the regions it supplies. It then describes the left coronary artery, its branches and territory, followed by the cardiac veins, chiefly the coronary sinus and its five tributaries, plus anterior ventricular veins and the smallest cardiac veins draining directly into the chambers.

Inside: 3 sections · 5 labelled pictures · 12 flashcards · 3 min

Topic 5 of 36 in the MU Sofia syllabus for Anatomy (Cardiovascular system) (Medicine, Year 2). The free AceMed note covers it in 3 sections, about 419 words (3 min of reading), with 12 flashcards.

In this note

  1. BLOOD SUPPLY OF THE HEART
  2. Coronary Artery :
  3. Cardiac Veins

BLOOD SUPPLY OF THE HEART

  • The blood supply of the heart is provided by the coronary artery:

Coronary Artery :

1. Right Coronary artery:

  • Originates from the right aortic sinus of the ascending aorta.
  • It runs between pulomanary trunk. and right auricle, to the anterior part of coronary groove. down to inferior border of heart , then winds to run in posterior part of coronary groove.
  • Ends by anastomosing with the circumflex branch of the left coronary artery.
  • Branches : Can Rita See My pin
  • Conus art.
  • Sinoatrial Nodal (SN) A.
  • Right atrial branches
  • Right Marginal art.
  • Posterior Interventricular art.

The right coronary artery supplies the right atrium and right ventricle, the sinu-atrial and atrioventricular nodes, the interatrial septum, a portion of the left atrium, the posteroinferior one third of the interventricular septum, and a portion of the posterior part of the left ventricle.

2. Left Coronary artery:

  • Originates from the left aortic sinus of the ascending aorta
  • Runs behind pulmonary trunk, then between it and left auricle.
  • Ends on reaching the coronary groove by giving anterior interventricular art. and continues as the circumflex artery
  • Branches :
  • L.C.A
  • Anterior Intraventricular art.
  • Conus art.
  • Proximal lateral art.
  • Distal lateral art.
  • Circumflex branch (cronary groove)
  • Left atrial branch.
  • left marginal art.
  • L. atrioventricual art.

The distribution pattern of the left coronary artery enables it to supply most of the left atrium and left ventricle, and most of the interventricular septum, including the atrioventricular bundle and its branches.

Continue reading free

The whole note, all 3 sections, is free with an AceMed account, with its 12 flashcards. Premium adds flashcard recall, highlights and Ask AI.

Start freeAlready a member? Open the note