Arterial supply, Venous and Lymphatic drainage of the heart Flashcards
The heart wall is supllies by which arteries?
left and right coronary arteries and their anastomosing branches.
the blood from the heart wall is drained by
the cardiac veins almost entirey into the coronary sinus, which in turn feeds into the right atrium
where are the coronary arteries and cardiac veins located?
embedded in the epicardium of the heart wall, usually surrounded by varying amounts of fat
what are the grooves of the heart wall?
The atrioventricular (coronary) sulcus, which encircles the heart between the atria and ventricles.
The interventricular sulci lie between the two ventricles
where do the LCA AND RCA arise from?
the left and right aortic sinuses
in which part of the aorta are the aortic sinuses found
ascending aorta
what are the two main branches given off by the RCA?
ADD DIAGRAM
right marginal artery
posterior interventricular artery
what are the two main branches given off by the LCA?
ADD DIAGRAM
circumflex artery
anterior interventricular artery
The posterior interventricular branch of the RCA anastomoses with which branch of the LCA?
anterior interventricular artery
After having given origin to its 2 main branches, the RCA continues towards the left in the coronary groove posteriorly and anastomoses with which branch of the LCA?
circumflex artery
The coronary arteries are ‘end arteries’. What is meant by the term ‘end artery’?
An end artery is an artery that is the only supply of oxygenated blood to a portion of tissue.
anterior interventricular artery areas of supply
interventricular septum, anterior walls of both ventricles.
circumflex artery areas of supply
left atrium and posterior walls of left ventricle
marginal artery areas of supply
lateral right side of heart (including right atrium).
posterior interventricular artery areas of supply
posterior right ventricular walls
what do the cardiac veins do?
carry blood with a poor level of oxygen, from the myocardium to the right atrium
most of the blood of the coronary veins returns to the right atrium through the…
coronary sinus
which heart veins go into the coronary sinus?
great cardiac vein, middle cardiac vein, small cardiac vein.
which heart veins go directly into the right atrium?
anterior cardiac veins, smallest cardiac veins (Thebesian veins).
the great cardiac vein lies alongside which artery?
ADD DIAGRAM
anterior interventricular artery in the anterior interventricular groove
What is 4 and name the area of the body drained by the structure.
Thoracic duct and whole body except the right upper quadrant
What are the main branches of the abdominal aorta?
Common iliac arteries
External iliac arteries
Internal iliac arteries
What is the course of the common iliac arteries
Arise at the vertebral level L4 and lie in iliac fossae. They are the terminal branches of the abdominal aorta.
What is the course of the external iliac arteries?
Arise from the common iliac arteries at vertebral level L5 and become the femoral arteries in the thigh.
What is the course of the internal iliac arteries?
Arise from the common iliac arteries at vertebral level L5 and supply pelvic viscera.
What structures do the internal thoracic arteries and their branches supply?
Internal intercostal muscles
Breast
Fibrous pericardium
Parietal pleura
Diaphragm
Venous drainage of the anterior chest wall:
The internal thoracic vein drains the anterior intercostal veins to the left and right brachiocephalic veins.
Venous drainage of the posterior chest wall
The azygous venous system drains blood from the posterior intercostal veins to the SVC.
