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18 Cards in this Set
- Front
- Back
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what does coronary circulation do |
supplies blood to the muscle of the heart via the coronary and cardiac veins |
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where do coronary arteries originate |
at the aortic sinuses |
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what is the general function of the coronary arteries |
high blood pressure and elastic rebound force blood through the coronary arteries between contractions |
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where does the right coronary artery supply blood to |
the R atrium portions of both ventriclees cells of sinoatria and AV nodes marginal arteries (the surface of R ventricle) posterior intraventricular artery |
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where does the left coronary artery supply blood to |
the left ventricle the left atrium the interventricular septum |
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what are the two main branches of the left coronary artery |
circumflex artery anterior interventricular artery |
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when does blood flow into the coronary artery |
during diastolic contraction |
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what are arterial anatosomes (connections) |
they interconnect anterior and posterior interventricular arteris and stabilize blood supply to the cardiac muscle |
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what does the great cardiac vein do |
drains blood from the area of the anterior interventricular artery into coronary sinus |
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where does the anterior cardiac veind empty |
into the right atrium |
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where do the posterior, middle, and rear cardiac veins empty
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into the great cardiac vein or coronary sinus |
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what is angina pectoris |
a temporary pain upon exertion or emoational stress from a partially blocked coronary artery |
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what is angina pectoris caused by |
ischemia of the heart muscle from increased O2 demand or vascular spasm -cardiac muscle cells are weakened |
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what is a myocardial infarction |
the blockage of a coronary artery that causes the death of cardiac tissue |
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how are areas killed by a MI repaired |
with noncontractile scar tissue |
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what is the most common cause of a MI |
thrombosis at the site of severe coronary artery disease |
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what can signs and symptoms of a MI be |
severe crushing pain, increased cardiac enzymes |
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what can a treatment for a MI be |
fibrinolytics acutely anticoagulants alone for a chronic condition |
