10 Questions
What would most likely occur if the blocked artery in the coronary circulation is not restored?
The myocardium supplied by the blocked artery would die
What is the primary reason for performing a coronary artery bypass grafting?
To relieve angina that is not amenable to pharmacological control
Which branch of the right coronary artery supplies the S-A node?
Nodal branch
What is the origin of the left coronary artery?
Aortic sinus immediately above the left posterior cusp of the aortic valve
Where does the coronary sinus drain into?
Right atrium to the left of and superior to the opening of the inferior vena cava
Which vein drains directly into the right atrium crossing the atrioventricular groove?
The anterior cardiac veins
Where is the sino-atrial (SA) node located?
Near the top of the crista terminalis, below the superior vena caval opening
Which artery does the middle cardiac vein follow?
The posterior interventricular artery
What effect does the parasympathetic nerve supply have on the heart?
Bradycardic
Where do the Purkinje fibers lie within the heart?
Within the subendocardium of the ventricles
Learn about the coronary arteries and their role in supplying oxygenated blood to the heart, including the effects of blockages and atherosclerosis on cardiac function.
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